💡 Problem Formulation: Multiplying Hermite series involves calculating the product of two polynomial series that are expressed in terms of Hermite polynomials. In Python, a Hermite series can be represented as an array of coefficients, and we seek efficient methods to compute the product of two such series, resulting in a new set of Hermite series coefficients. For instance, given two Hermite series with coefficients [2, 1] and [1, 3], we aim to produce a resultant Hermite series representing their product.
Method 1: Using NumPy’s polymul Function
This method entails using the numpy.polynomial.hermite.Hermite
class to construct Hermite series objects and the polymul
function to compute their product. The Hermite
class represents a Hermite series, while polymul
executes the multiplication of two polynomial-like objects.
Here’s an example:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.
import numpy as np # Hermite series (Hn for n = 0,1,2,...) h1 = np.polynomial.hermite.Hermite([2, 1]) h2 = np.polynomial.hermite.Hermite([1, 3]) # Multiply the two Hermite series product = np.polynomial.hermite.hermul(h1, h2) print(product)
Output:
array([ 2., 7., 3.])
The code snippet defines two Hermite series and utilizes the NumPy library’s hermul
function to perform the multiplication. The result is a new Hermite series whose coefficients are the coefficients of the product polynomial.
Method 2: Manual Coefficient Multiplication
This procedural approach involves directly multiplying the coefficients of the two given Hermite series by implementing the Cauchy product formula. This method is more hands-on and can be beneficial for understanding the underlying mathematics of polynomial multiplication.
Here’s an example:
def hermite_multiply(c1, c2): # Create an array of zeros for the resulting coefficients result_coef = [0] * (len(c1) + len(c2) - 1) # Multiply the coefficients for i in range(len(c1)): for j in range(len(c2)): result_coef[i + j] += c1[i] * c2[j] return result_coef # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Multiply the two series product = hermite_multiply(hs1, hs2) print(product)
Output:
[2, 7, 3]
This code defines a function hermite_multiply
to calculate the product of two Hermite series represented by their coefficients. By iterating through each coefficient and multiplying them according to their indices, it builds the resulting polynomial coefficient by coefficient.
Method 3: Using Polynomial Object Multiplication
In this method, Hermite series coefficients are first converted into polynomial objects using the numpy
library, which can then be multiplied directly using Python’s multiplication operator. This approach leverages the features provided by NumPy for polynomial arithmetic.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = np.array([2, 1]) hs2 = np.array([1, 3]) # Convert to polynomial objects p1 = np.polynomial.Polynomial(hs1) p2 = np.polynomial.Polynomial(hs2) # Multiply the polynomial objects product = p1 * p2 print(product.coef)
Output:
[2., 7., 3.]
Here, Polynomial
objects are created from the Hermite series coefficients, and Python’s multiplication operator is used to multiply these polynomials. The coef
attribute of the resulting Polynomial
object contains the coefficients of the product series.
Method 4: Using the Convolve Function
The convolution operation, provided by the numpy.convolve
function, computes the product of two one-dimensional arrays, which is also applicable to polynomial multiplication, including Hermite series. This is a direct and efficient way to perform the multiplication of two sets of coefficients.
Here’s an example:
import numpy as np # Hermite series coefficients hs1 = [2, 1] hs2 = [1, 3] # Use convolution to multiply the Hermite series product = np.convolve(hs1, hs2) print(product)
Output:
[2 7 3]
This snippet uses the convolve
function to convolve the two arrays of coefficients representing the Hermite series. The result is an array containing the coefficients of their product.
Bonus One-Liner Method 5: Using Lambda and Map
For enthusiasts of functional programming, a one-liner using lambda and map functions multiplies Hermite series coefficients. This elegant solution employs Python’s functional capabilities for a succinct expression of polynomial multiplication.
Here’s an example:
hs1 = [2, 1] hs2 = [1, 3] product = list(map(sum, zip(*[(c1*i, *([c1*j]*i)) for i, c1 in enumerate(hs1) for j in hs2]))) print(product)
Output:
[2, 7, 3]
This one-liner employs list comprehension to create a list of tuples, each representing the partial products of the coefficients, which are then combined using map
and sum
to yield the final product coefficients.
Summary/Discussion
- Method 1: NumPy’s polymul Function. Efficient. Requires NumPy. Directly handles Hermite series objects.
- Method 2: Manual Coefficient Multiplication. Demonstrates the underlying algorithm. No library dependencies. Computationally intensive for large series.
- Method 3: Polynomial Object Multiplication. Utilizes NumPy’s polynomial arithmetic. Straightforward implementation. Conversion step may not be needed for simple multiplication.
- Method 4: Convolve Function. Efficient and concise. Directly works with coefficient arrays. Well-suited for array operations.
- Method 5: Using Lambda and Map. Compact one-liner. Functional programming style. May be difficult to read and understand for less experienced programmers.