Add intersphinx mapping to SymPy matrix methods

[moorepants]

• hadamard_product
• inv()
• LUsolve

There are probably a couple more on that page. I had trouble finding the node in SymPy's docs (may not exist in some cases).

[tjstienstra]

location of LUsolve
For inv() I would guess this location. I could not find anything for hadamard_product.

[Peter230655]

I found this in the sympy documentation

multiply_elementwise(other)[source]
Return the Hadamard product (elementwise product) of A and B

Examples

from sympy import Matrix
A = Matrix([[0, 1, 2], [3, 4, 5]])
B = Matrix([[1, 10, 100], [100, 10, 1]])
A.multiply_elementwise(B)
Matrix([
[ 0, 10, 200],
[300, 40, 5]])

[moorepants]

Oh yeah, maybe I should recommend that instead of the hadamard_product() function. I guess they are the same.

[moorepants]

There is a top level function called sympy.hadamard_product() that isn't in the documentation (docstring). And multiply_elementwise() is a method for Matrices. I think I showed hadamard because it was a function not a method.

[moorepants]

The endpoint for hadamard_product will be in 1.12: sympy/sympy#23900

[moorepants]

Helpful command I just learned:

python -m sphinx.ext.intersphinx 'https://docs.sympy.org/latest/objects.inv' > sympy-inter.txt

[moorepants]

Fixed LUsolve and inv in 5f9a1d0