4 questions from the last 30 days
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95
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something went wrong in my matrix program of java [duplicate]
I made a matrix program in java which calculate the all similar matrix with the same determinant (there are a lot, I began for forty) .
but I have a problem: In the class where I do the algorithm for ...
3
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1
answer
55
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Why is Matrix Multiplication Slow During Pseudoinverse Calculation?
X, Z, YT = sp.linalg.svds(W, k=353, which='LM')
U = YT.transpose() @ np.diag(Z) @ X.transpose()
Where W is a sparse CSR matrix of size (124956, 124956). The matrix multiplication to compute U takes a ...
- 31
0
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0
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80
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Rewriting a n-dimensional matrix of dot products as a matrix multiplication
This is a crosspost from the Math Exchange forum, it seems to me that this question can be approached in two different ways so I am curious about different approaches.
https://math.stackexchange.com/...
- 41
1
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1
answer
40
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Why doesn't Symbolics.expand work in matrices?
I'm working with Julia's Symbolics.jl and I'm trying to compare two symbolic matrices.
However, since Symbolics.isequal function checks for structural- instead of mathematical-equivalence it is ...
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