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1 answer
82 views

Time and memory required to diagonalize a 18000 by 18000 matrix using numpy in python

3 votes
1 answer
84 views

Rank-1 correction of matrix exponential

2 votes
0 answers
86 views

Schur complement formulation of linear system

6 votes
1 answer
176 views

How to optimize an approximated matrix multiplication?

3 votes
0 answers
62 views

Approximating eigenvalues of DPR1 matrix with special properties

1 vote
1 answer
78 views

Powers of convergent DPR1 matrices in $O(d)$ time?

1 vote
1 answer
110 views

Lanczos memory complexity for dense matrices

4 votes
2 answers
216 views

Faster than forward substitution?

2 votes
1 answer
461 views

In Octave, how do I specify that the solution to a matrix equation should be over integers?

11 votes
2 answers
288 views

What makes a good preconditioner when only a few approximate iterations are needed?

7 votes
1 answer
338 views

Computing powers of diagonal + rank-1 matrix?

0 votes
0 answers
54 views

Eigenvalues of same operator expressed in two different orthonormal basis are coming out different

2 votes
1 answer
84 views

Ways to fix block Lanczos tridiagonalisation numerical instability for matrix with degenerate, closely spaced eigenvalues?

7 votes
1 answer
277 views

Choice of iterative solver for a sparse asymmetric matrix with symmetric structure

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