Question

Conditions for upper-triangular factor in QR factorization

score 507 · Answer 1 · 2026-03-24 23:41:55

507

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Conditions for upper-triangular factor in QR factorization

Published on 24 Mar 2026 - 23:41

score 166 · Answer 2 · 2026-04-29 12:54:28

166

Views

Proximal Operator / Mapping of Multiplication of Two Matrices

Published on 29 Apr 2026 - 12:54

score 177 · Answer 3 · 2026-04-29 12:42:44

177

Views

Create a matrix with a given sparsity pattern and whose condition number is low

Published on 29 Apr 2026 - 12:42

score 78 · Answer 4 · 2026-04-29 12:42:50

78

Views

Matlab - eigenvalue doesn't zero the characteristic polynomial

Published on 29 Apr 2026 - 12:42

score 7.7k · Answer 5 · 2026-04-11 09:45:56

7.7k

Views

Sylvester's criteria and Negative definite Matrices.

Published on 11 Apr 2026 - 9:45

score 264 · Answer 6 · 2026-04-12 23:17:40

264

Views

Differentiate $\sum_{ij}[\sum_{k}\log \frac{W_{ik}H_{kj}}{\alpha} + \sum_{k}W_{ik}H_{kj}] + \sum_{kj}[\frac{\beta}{2} \vert H_{kj} \vert^{2}] = 0$

Published on 12 Apr 2026 - 23:17

score 1.4k · Answer 7 · 2026-04-17 14:31:46

1.4k

Views

Proof matrix inverse exists if determinant is different from zero

Published on 17 Apr 2026 - 14:31

score 236 · Answer 8 · 2026-04-15 09:43:32

236

Views

Dimension of biggest linear subspace inside a variety of matrices

Published on 15 Apr 2026 - 9:43

score 178 · Answer 9 · 2026-04-11 01:40:19

178

Views

The inverse of $(A+A^{-1})$ when $A=A^{-1}$

Published on 11 Apr 2026 - 1:40

score 96 · Answer 10 · 2026-04-18 15:51:35

96

Views

Adding the constraint "at least one entry of $x$ is $100$" to a convex program

Published on 18 Apr 2026 - 15:51

score 600 · Answer 11 · 2026-04-09 01:47:34

600

Views

Is combination of elementary row operation considered elementary row operation?

Published on 09 Apr 2026 - 1:47

score 41 · Answer 12 · 2026-04-12 03:37:09

41

Views

combinations and permutations, how can I formulate it?

Published on 12 Apr 2026 - 3:37

score 51 · Answer 13 · 2026-04-09 04:52:10

51

Views

surjective morphism between $\mathbb{Z}$-modules

Published on 09 Apr 2026 - 4:52

score 82 · Answer 14 · 2026-04-15 02:52:19

82

Views

Guarantees of a Quadratic Form for Two Related Matrices

Published on 15 Apr 2026 - 2:52

score 38 · Answer 15 · 2026-04-10 11:36:04

38

Views

Does one-to-one transformation means its matrix is regular?

Published on 10 Apr 2026 - 11:36

List Question

Conditions for upper-triangular factor in QR factorization

Proximal Operator / Mapping of Multiplication of Two Matrices

Create a matrix with a given sparsity pattern and whose condition number is low

Matlab - eigenvalue doesn't zero the characteristic polynomial

Sylvester's criteria and Negative definite Matrices.

Differentiate $\sum_{ij}[\sum_{k}\log \frac{W_{ik}H_{kj}}{\alpha} + \sum_{k}W_{ik}H_{kj}] + \sum_{kj}[\frac{\beta}{2} \vert H_{kj} \vert^{2}] = 0$

Proof matrix inverse exists if determinant is different from zero

Dimension of biggest linear subspace inside a variety of matrices

The inverse of $(A+A^{-1})$ when $A=A^{-1}$

Adding the constraint "at least one entry of $x$ is $100$" to a convex program

Is combination of elementary row operation considered elementary row operation?

combinations and permutations, how can I formulate it?

surjective morphism between $\mathbb{Z}$-modules

Guarantees of a Quadratic Form for Two Related Matrices

Does one-to-one transformation means its matrix is regular?

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