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0 votes
0 answers
7 views

Which preconditioners make Richardson iteration convergent?

39 votes
22 answers
10k views

Good examples of "two is easy, three is hard" in computational sciences

3 votes
1 answer
131 views

Column-normalized inverse?

7 votes
0 answers
57 views

Choice between using Moore-Penrose inverse and G2 inverse

5 votes
1 answer
100 views

Largest singular value without using the adjoint

2 votes
1 answer
114 views

Numerical representation of linear spaces

3 votes
1 answer
1k views

Set of linear ordinary differential equations with a mass matrix

9 votes
2 answers
2k views

Is there an algorithm or graph theory that allows me to not need to store an intermediate matrix when calculating AT*Y1*A + BT*Y2*B?

7 votes
3 answers
2k views

Choosing subset of vectors to approximate a subspace

3 votes
1 answer
162 views

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

57 votes
4 answers
9k views

What guidelines should I follow when choosing a sparse linear system solver?

3 votes
1 answer
83 views

Using submatrices of matrix decomposition for solving a large number least-squares problems

1 vote
1 answer
94 views

constructing a symmetric matrix for finite difference

10 votes
2 answers
566 views

Extracting diagonal of an approximately diagonal matrix when we don't know its entries

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