Question

How to show that following relation is true for matrix multiplication?

score 85 · Answer 1 · 2026-04-14 16:04:30

85

Views

How to show that following relation is true for matrix multiplication?

Published on 14 Apr 2026 - 16:04

score 77 · Answer 2 · 2026-04-15 22:05:29

77

Views

Show that $J-A$ will have nullity at least $9$

Published on 15 Apr 2026 - 22:05

score 1.3k · Answer 3 · 2026-03-24 23:45:15

1.3k

Views

Sum of positive semidefinite and negative definite matrices

Published on 24 Mar 2026 - 23:45

score 50 · Answer 4 · 2026-04-12 15:28:13

50

Views

Condition for $\|X_n^{-1}\|$ to be bounded?

Published on 12 Apr 2026 - 15:28

score 382 · Answer 5 · 2026-04-11 12:47:53

382

Views

Additive Jordan decomposition of a 3x3 matrix

Published on 11 Apr 2026 - 12:47

score 75 · Answer 6 · 2026-04-12 04:51:20

75

Views

Is there a necessary condition for the projection of two matrices to be the same?

Published on 12 Apr 2026 - 4:51

score 114 · Answer 7 · 2026-04-09 16:01:19

114

Views

Is the product of a positive definite matrix and negative semi-definite function negative semidefinite?

Published on 09 Apr 2026 - 16:01

score 80 · Answer 8 · 2026-04-11 23:48:56

80

Views

Orthogonally Diagonalize a matrix with nonreal eigenvectors

Published on 11 Apr 2026 - 23:48

score 185 · Answer 9 · 2026-04-13 06:43:04

185

Views

Generalisation of Schur's lemma

Published on 13 Apr 2026 - 6:43

score 81 · Answer 10 · 2026-04-13 07:27:06

81

Views

When is the given matrix not diagonizable?

Published on 13 Apr 2026 - 7:27

score 172 · Answer 11 · 2026-04-15 09:05:52

172

Views

Show that $\log(\det(H_1)) ≤ \log(\det(H_2)) + \operatorname{tr}[H^{-1}_2H_1]−N$ for all positive semidefinite matrices $H_1,H_2 \in C^N$

Published on 15 Apr 2026 - 9:05

score 92 · Answer 12 · 2026-03-24 23:46:01

92

Views

Conditions on correlation parameter for positive (semi) definitiveness of variance-covariance matrix

Published on 24 Mar 2026 - 23:46

score 395 · Answer 13 · 2026-04-12 02:15:43

395

Views

Matrix inversion problem in ridge regression

Published on 12 Apr 2026 - 2:15

score 82 · Answer 14 · 2026-04-14 14:00:46

82

Views

Linear algebra with matrices not only for $\mathbb{R}^n$?

Published on 14 Apr 2026 - 14:00

score 261 · Answer 15 · 2026-04-20 16:03:50

261

Views

Is there an easy way to compute the determinant of this block matrix?

Published on 20 Apr 2026 - 16:03

List Question

How to show that following relation is true for matrix multiplication?

Show that $J-A$ will have nullity at least $9$

Sum of positive semidefinite and negative definite matrices

Condition for $\|X_n^{-1}\|$ to be bounded?

Additive Jordan decomposition of a 3x3 matrix

Is there a necessary condition for the projection of two matrices to be the same?

Is the product of a positive definite matrix and negative semi-definite function negative semidefinite?

Orthogonally Diagonalize a matrix with nonreal eigenvectors

Generalisation of Schur's lemma

When is the given matrix not diagonizable?

Show that $\log(\det(H_1)) ≤ \log(\det(H_2)) + \operatorname{tr}[H^{-1}_2H_1]−N$ for all positive semidefinite matrices $H_1,H_2 \in C^N$

Conditions on correlation parameter for positive (semi) definitiveness of variance-covariance matrix

Matrix inversion problem in ridge regression

Linear algebra with matrices not only for $\mathbb{R}^n$?

Is there an easy way to compute the determinant of this block matrix?

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