Question

$i$-th singular value of a matrix

score 75 · Answer 1 · 2026-04-15 22:18:00

75

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$i$-th singular value of a matrix

Published on 15 Apr 2026 - 22:18

score 512 · Answer 2 · 2026-03-25 06:18:55

512

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Avoid equality constraints - Only lower bound and upper bound - Quadratic Programmering

Published on 25 Mar 2026 - 6:18

score 3.7k · Answer 3 · 2026-04-14 19:18:15

3.7k

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Show the determinant of a Product of Non-Square Matrices equals Zero if Multiplied so that the Larger Matrix is Output

Published on 14 Apr 2026 - 19:18

score 653 · Answer 4 · 2026-03-26 01:03:22

653

Views

Example of a matrix where $\rho(A)<\|A\|_p$

Published on 26 Mar 2026 - 1:03

score 490 · Answer 5 · 2026-04-17 10:12:27

490

Views

Conceptual question of coplanar matrix

Published on 17 Apr 2026 - 10:12

score 85 · Answer 6 · 2026-04-12 06:40:30

85

Views

How to show that $\sum_{i=1}^n|\lambda_i|\leq \sum_{i,j}|a_{ij}|$?

Published on 12 Apr 2026 - 6:40

score 1.4k · Answer 7 · 2026-04-15 18:20:33

1.4k

Views

While converting rotation matrix to angle-axis representation how to find axis of rotation when angle of rotation is Pi?

Published on 15 Apr 2026 - 18:20

score 57 · Answer 8 · 2026-04-15 23:18:50

57

Views

Sum of two inverse matrices

Published on 15 Apr 2026 - 23:18

score 188 · Answer 9 · 2026-04-15 23:08:09

188

Views

On the product of a rotation matrix and a skew symmetric matrix

Published on 15 Apr 2026 - 23:08

score 62 · Answer 10 · 2026-04-16 13:20:33

62

Views

For all $A, B \in \mathcal{M}_n(\mathbb{C})$, if $[A, [A, B]] = 0$, then $[A, B]$ is nilpotent

Published on 16 Apr 2026 - 13:20

score 316 · Answer 11 · 2026-04-16 09:48:25

if $A$ and $B$ are row equivalent and rows of $A$ are linearly independent then each row of $B$ expressible as a linear combination of $A$?

score 26 · Answer 12 · 2026-04-09 06:22:12

26

Views

Injectivity and surjectivity of a linear map with parameter

Published on 09 Apr 2026 - 6:22

score 130 · Answer 13 · 2026-04-13 22:55:40

130

Views

Different basis for the column space of same matrix.

Published on 13 Apr 2026 - 22:55

score 214 · Answer 14 · 2026-04-16 02:20:46

214

Views

On the Weierstrass (AKA Kronecker form) of a Matrix Pencil

Published on 16 Apr 2026 - 2:20

score 120 · Answer 15 · 2026-04-17 05:22:13

120

Views

Determinant of $\left(\begin{smallmatrix} -2a &a+b &a+c \\ b+a& -2b &b+c \\ c+a&c+b & -2c \end{smallmatrix}\right)$

Published on 17 Apr 2026 - 5:22

List Question

$i$-th singular value of a matrix

Avoid equality constraints - Only lower bound and upper bound - Quadratic Programmering

Show the determinant of a Product of Non-Square Matrices equals Zero if Multiplied so that the Larger Matrix is Output

Example of a matrix where $\rho(A)<\|A\|_p$

Conceptual question of coplanar matrix

How to show that $\sum_{i=1}^n|\lambda_i|\leq \sum_{i,j}|a_{ij}|$?

While converting rotation matrix to angle-axis representation how to find axis of rotation when angle of rotation is Pi?

Sum of two inverse matrices

On the product of a rotation matrix and a skew symmetric matrix

For all $A, B \in \mathcal{M}_n(\mathbb{C})$, if $[A, [A, B]] = 0$, then $[A, B]$ is nilpotent

if $A$ and $B$ are row equivalent and rows of $A$ are linearly independent then each row of $B$ expressible as a linear combination of $A$?

Injectivity and surjectivity of a linear map with parameter

Different basis for the column space of same matrix.

On the Weierstrass (AKA Kronecker form) of a Matrix Pencil

Determinant of $\left(\begin{smallmatrix} -2a &a+b &a+c \\ b+a& -2b &b+c \\ c+a&c+b & -2c \end{smallmatrix}\right)$

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