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0 votes

0 answers

7 views

Which preconditioners make Richardson iteration convergent?

linear-algebra

Yaroslav Bulatov

1,159

modified 51 mins ago

39 votes

22 answers

10k views

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

linear-algebra computational-physics computational-geometry computational-chemistry

Yaroslav Bulatov

1,159

modified Jun 28 at 22:24

3 votes

1 answer

131 views

Column-normalized inverse?

linear-algebra

Yaroslav Bulatov

1,159

modified Jun 23 at 1:38

7 votes

0 answers

57 views

Choice between using Moore-Penrose inverse and G2 inverse

linear-algebra

waic

173

modified Jun 19 at 19:07

5 votes

1 answer

100 views

Largest singular value without using the adjoint

linear-algebra numerics

user7440

547

answered Jun 19 at 3:20

2 votes

1 answer

114 views

Numerical representation of linear spaces

linear-algebra

Maxim Umansky

2,066

modified Jun 11 at 7:04

3 votes

1 answer

1k views

Set of linear ordinary differential equations with a mass matrix

linear-algebra numerical-analysis ode eigenvalues iterative-method

nicholasfor

1

modified Jun 2 at 9:49

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 ATY1A + BTY2B?

linear-algebra algorithms performance graph-theory

Thijs Steel

1,189

modified May 31 at 17:52

7 votes

3 answers

2k views

Choosing subset of vectors to approximate a subspace

linear-algebra optimization approximation

Glorfindel

193

modified May 18 at 9:20

3 votes

1 answer

162 views

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

linear-algebra linear-solver sparse-matrix symmetry

CommunityBot

1

modified May 14 at 19:04

57 votes

4 answers

9k views

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

linear-algebra linear-solver sparse-matrix

Glorfindel

193

modified May 9 at 14:42

3 votes

1 answer

83 views

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

linear-algebra matrix least-squares

davidhigh

2,557

modified May 6 at 5:33

1 vote

1 answer

94 views

constructing a symmetric matrix for finite difference

linear-algebra finite-difference matrix discretization

Steven Roberts

934

modified May 3 at 2:57

10 votes

2 answers

566 views

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

linear-algebra preconditioning

Neil Lindquist

460

answered Apr 28 at 13:22

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Which preconditioners make Richardson iteration convergent?

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

Column-normalized inverse?

Choice between using Moore-Penrose inverse and G2 inverse

Largest singular value without using the adjoint

Numerical representation of linear spaces

Set of linear ordinary differential equations with a mass matrix

Is there an algorithm or graph theory that allows me to not need to store an intermediate matrix when calculating ATY1A + BTY2B?

Choosing subset of vectors to approximate a subspace

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

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

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

constructing a symmetric matrix for finite difference

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

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