Question

Linear transform of exchangeable random vector

score 95 · Answer 1 · 2026-04-10 13:05:33

95

Views

Linear transform of exchangeable random vector

Published on 10 Apr 2026 - 13:05

score 250 · Answer 2 · 2026-04-13 18:40:48

250

Views

Hilbert basis - Alternative definition with infinite linear combinations

Published on 13 Apr 2026 - 18:40

score 784 · Answer 3 · 2026-04-15 14:17:17

784

Views

Time Complexity - Reducing Square Matrix to Diagonal Matrix (using Gaussian Row Elimination)

Published on 15 Apr 2026 - 14:17

score 173 · Answer 4 · 2026-05-11 02:06:42

173

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 11 May 2026 - 2:06

score 71 · Answer 5 · 2026-05-10 18:27:45

71

Views

If $A$ is an affine space in $\mathbb{R}^n$, is $A-x$ a subspace of $\mathbb{R}^n$ for every $x \in A$?

Published on 10 May 2026 - 18:27

score 396 · Answer 6 · 2026-05-10 18:58:38

396

Views

Matrix inversion problem in ridge regression

Published on 10 May 2026 - 18:58

score 459 · Answer 7 · 2026-05-10 14:03:00

459

Views

Triangulation and Linear Systems

Published on 10 May 2026 - 14:03

score 82 · Answer 8 · 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 253 · Answer 9 · 2026-04-16 02:20:05

253

Views

Simplify the polynomial $xy(x+y)+(x+y)+(x+y)^2=13xy$ to the form $y^2=4x^3-g_{2}x-g_{3}$

Published on 16 Apr 2026 - 2:20

score 465 · Answer 10 · 2026-05-15 01:28:00

465

Views

Example of $f$ semi-simple but not diagonalizable

Published on 15 May 2026 - 1:28

score 146 · Answer 11 · 2026-04-16 11:01:13

146

Views

$W$ be a $d$-dimensional subspace of $\mathbb R^n$. Then how to show that $|\{(x_1,...,x_n) \in W : x_i \in \{0,1\}\}| \le 2^d$?

Published on 16 Apr 2026 - 11:01

score 2.3k · Answer 12 · 2026-04-11 22:13:29

2.3k

Views

Unique steady state vector in relation to regular transition matrix

Published on 11 Apr 2026 - 22:13

score 1.9k · Answer 13 · 2026-04-12 20:25:03

1.9k

Views

Rotation matrix and projection matrix in $\Bbb R^3$

Published on 12 Apr 2026 - 20:25

score 623 · Answer 14 · 2026-05-10 17:15:04

623

Views

Orthogonal group is a subgroup of GL(V)

Published on 10 May 2026 - 17:15

score 146 · Answer 15 · 2026-04-14 21:18:46

146

Views

A simple inequality arising from the "negativeness" of Euclidean spaces

Published on 14 Apr 2026 - 21:18

List Question

Linear transform of exchangeable random vector

Hilbert basis - Alternative definition with infinite linear combinations

Time Complexity - Reducing Square Matrix to Diagonal Matrix (using Gaussian Row Elimination)

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

If $A$ is an affine space in $\mathbb{R}^n$, is $A-x$ a subspace of $\mathbb{R}^n$ for every $x \in A$?

Matrix inversion problem in ridge regression

Triangulation and Linear Systems

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

Simplify the polynomial $xy(x+y)+(x+y)+(x+y)^2=13xy$ to the form $y^2=4x^3-g_{2}x-g_{3}$

Example of $f$ semi-simple but not diagonalizable

$W$ be a $d$-dimensional subspace of $\mathbb R^n$. Then how to show that $|\{(x_1,...,x_n) \in W : x_i \in \{0,1\}\}| \le 2^d$?

Unique steady state vector in relation to regular transition matrix

Rotation matrix and projection matrix in $\Bbb R^3$

Orthogonal group is a subgroup of GL(V)

A simple inequality arising from the "negativeness" of Euclidean spaces

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