Question

Equation of the form $AX=B$ but in matrix form

score 323 · Answer 1 · 2026-04-11 09:22:39

323

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Equation of the form $AX=B$ but in matrix form

Published on 11 Apr 2026 - 9:22

score 59 · Answer 2 · 2026-04-14 09:10:50

59

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Does this matrix equality hold? How to prove it? $B \bullet A=B\bullet U\Lambda U^T=U^TBU\bullet A$?

Published on 14 Apr 2026 - 9:10

score 57 · Answer 3 · 2026-04-15 15:17:16

57

Views

Trace of the mutiplication of many identical matrices

Published on 15 Apr 2026 - 15:17

score 55 · Answer 4 · 2026-04-11 18:16:27

55

Views

Show that set $A$ is linearly dependent to work out $\operatorname{span}(A)$.

Published on 11 Apr 2026 - 18:16

score 42 · Answer 5 · 2026-04-11 17:36:00

42

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properties of positive definite matrices 3 2 1

Published on 11 Apr 2026 - 17:36

score 48 · Answer 6 · 2026-04-12 12:28:18

48

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What are the conditions for the existence of a special orthogonal similarity transformation?

Published on 12 Apr 2026 - 12:28

score 416 · Answer 7 · 2026-04-12 16:30:57

416

Views

Number of $3 \times 3$ symmetric matrices with entries five ones and four zeros which are Non Singular

Published on 12 Apr 2026 - 16:30

score 170 · Answer 8 · 2026-04-20 07:47:45

170

Views

Canonic form of a quadric

Published on 20 Apr 2026 - 7:47

score 121 · Answer 9 · 2026-03-24 23:46:37

121

Views

Weighted sums of positive semidefinite matrices are uniformly positive definite

Published on 24 Mar 2026 - 23:46

score 345 · Answer 10 · 2026-04-18 09:00:13

345

Views

How is this a linear matrix inequality?

Published on 18 Apr 2026 - 9:00

score 87 · Answer 11 · 2026-04-15 12:52:12

87

Views

A formula for determinant of symetric matrix whose off-diagonal entries are $-1$

Published on 15 Apr 2026 - 12:52

score 218 · Answer 12 · 2026-04-13 05:57:01

218

Views

If $AB=0$, how can I show that $Col(B)$ is a subspace of $Nul(A)$?

Published on 13 Apr 2026 - 5:57

score 1.1k · Answer 13 · 2026-04-13 13:04:19

1.1k

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Big-O & Little-O Notation and Matrices

Published on 13 Apr 2026 - 13:04

score 1.4k · Answer 14 · 2026-04-15 15:21:25

1.4k

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Unit norm eigenvectors of a symmetric matrix

Published on 15 Apr 2026 - 15:21

score 34 · Answer 15 · 2026-04-13 10:09:09

34

Views

$df(A) (\in L(\mathbb{R}^4,\mathbb{R}))$ for $f: A \mapsto \det A$ $f: \mathbb{R}^{2 \times 2} \cong\mathbb{R}^4 \longrightarrow \mathbb{R}$

Published on 13 Apr 2026 - 10:09

List Question

Equation of the form $AX=B$ but in matrix form

Does this matrix equality hold? How to prove it? $B \bullet A=B\bullet U\Lambda U^T=U^TBU\bullet A$?

Trace of the mutiplication of many identical matrices

Show that set $A$ is linearly dependent to work out $\operatorname{span}(A)$.

properties of positive definite matrices 3 2 1

What are the conditions for the existence of a special orthogonal similarity transformation?

Number of $3 \times 3$ symmetric matrices with entries five ones and four zeros which are Non Singular

Canonic form of a quadric

Weighted sums of positive semidefinite matrices are uniformly positive definite

How is this a linear matrix inequality?

A formula for determinant of symetric matrix whose off-diagonal entries are $-1$

If $AB=0$, how can I show that $Col(B)$ is a subspace of $Nul(A)$?

Big-O & Little-O Notation and Matrices

Unit norm eigenvectors of a symmetric matrix

$df(A) (\in L(\mathbb{R}^4,\mathbb{R}))$ for $f: A \mapsto \det A$ $f: \mathbb{R}^{2 \times 2} \cong\mathbb{R}^4 \longrightarrow \mathbb{R}$

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