Question

Notion of derivative used in Petersen & Pedersen's Matrix Cookbook

score 677 · Answer 1 · 2026-05-10 17:18:07

677

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Notion of derivative used in Petersen & Pedersen's Matrix Cookbook

Published on 10 May 2026 - 17:18

score 61 · Answer 2 · 2026-05-10 14:44:27

61

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Converting revolution to rounds per minutes

Published on 10 May 2026 - 14:44

score 95 · Answer 3 · 2026-04-12 21:47:58

95

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Show that $B$ $\in$ $GL_{n-1}($K$)$ $\Rightarrow$ $A$ $\in$ $GL_n$($K$)

Published on 12 Apr 2026 - 21:47

score 662 · Answer 4 · 2026-05-14 14:19:08

662

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Syndrome decoding algorithms

Published on 14 May 2026 - 14:19

score 1.3k · Answer 5 · 2026-05-11 00:51:22

1.3k

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Multiplying a matrix with its eigenvectors stretches or contracts the vector without changing its "direction". Is this true for complex eigenvalues?

Published on 11 May 2026 - 0:51

score 889 · Answer 6 · 2026-04-16 07:52:59

889

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Let $A\in M_{n\times n}(\Bbb R)$ so that $I\notin span(A,A^2,...,A^n)$. Prove that $\det(A)=0$.

Published on 16 Apr 2026 - 7:52

score 85 · Answer 7 · 2026-04-14 12:10:26

85

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Prove that $f$ is bijective?

Published on 14 Apr 2026 - 12:10

score 432 · Answer 8 · 2026-05-10 17:02:46

432

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If the matrix representation of an orthogonal transformation with respect to a basis is an orthogonal matrix, the basis is an orthonormal basis?

Published on 10 May 2026 - 17:02

score 57 · Answer 9 · 2026-05-10 23:48:21

57

Views

Adjoint mapping

Published on 10 May 2026 - 23:48

score 132 · Answer 10 · 2026-04-16 00:19:34

132

Views

Exponential form of general integral of a linear system of ODE

Published on 16 Apr 2026 - 0:19

score 704 · Answer 11 · 2026-04-14 23:34:13

704

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Isomorphisms between elements in $\mathbb{R}^n$ and $n \times 1$ column matrices

Published on 14 Apr 2026 - 23:34

score 267 · Answer 12 · 2026-05-15 21:01:12

267

Views

Finding the condition number of a matrix

Published on 15 May 2026 - 21:01

score 53 · Answer 13 · 2026-04-11 19:29:09

53

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Finding the $2\times 2$ determinant using row operations and upper triangular matrix.

Published on 11 Apr 2026 - 19:29

score 30 · Answer 14 · 2026-04-16 13:35:51

30

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difference base transformation and point transformation

Published on 16 Apr 2026 - 13:35

score 203 · Answer 15 · 2026-04-24 20:56:13

203

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Matrix with $A_{ij} = a_i a_j$ for some vector $a\in\mathbb{R}^n$

Published on 24 Apr 2026 - 20:56

List Question

Notion of derivative used in Petersen & Pedersen's Matrix Cookbook

Converting revolution to rounds per minutes

Show that $B$ $\in$ $GL_{n-1}($K$)$ $\Rightarrow$ $A$ $\in$ $GL_n$($K$)

Syndrome decoding algorithms

Multiplying a matrix with its eigenvectors stretches or contracts the vector without changing its "direction". Is this true for complex eigenvalues?

Let $A\in M_{n\times n}(\Bbb R)$ so that $I\notin span(A,A^2,...,A^n)$. Prove that $\det(A)=0$.

Prove that $f$ is bijective?

If the matrix representation of an orthogonal transformation with respect to a basis is an orthogonal matrix, the basis is an orthonormal basis?

Adjoint mapping

Exponential form of general integral of a linear system of ODE

Isomorphisms between elements in $\mathbb{R}^n$ and $n \times 1$ column matrices

Finding the condition number of a matrix

Finding the $2\times 2$ determinant using row operations and upper triangular matrix.

difference base transformation and point transformation

Matrix with $A_{ij} = a_i a_j$ for some vector $a\in\mathbb{R}^n$

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