List questions from matrix-calculus

Published on 13 Apr 2026 - 12:31

114

Views

Global minimum of $f(x)=\langle Ax,x \rangle +2 \langle x,b \rangle+c$

Published on 09 Apr 2026 - 5:47

281

Views

On an inner product condition between symmetric matrices

Published on 19 Nov 2017 - 16:27

38

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What does "Matrix indexed for..." mean?

Published on 08 Apr 2026 - 22:12

196

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When is a matrix the cosine of another matrix?

Published on 20 Nov 2017 - 1:51

357

Views

Derivative of a Cross product

Published on 11 Apr 2026 - 10:25

117

Views

Sum/Product of two Infinitely Divisible matrices is Infinitely Divisible?

Published on 29 Mar 2026 - 6:30

226

Views

Finding the Jacobian matrix of an intergral

Published on 10 Apr 2026 - 20:29

29

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How to compute the following divergence

Published on 11 Apr 2026 - 3:36

35

Views

The negative definiteness by deleting row and column

Published on 11 Apr 2026 - 10:09

296

Views

If $P,Q\ge 0;P+Q=I$, how to prove $||P-Q||_2\le1$

Published on 06 Apr 2026 - 18:42

108

Views

basis of direct sum of matrix algebras

Published on 12 Apr 2026 - 9:07

1k

Views

Optimization problem with Mahalanobis distance

Published on 09 Apr 2026 - 6:04

437

Views

On the concavity of a log-det function

Published on 13 Apr 2026 - 3:56

706

Views

Creating a transformation matrix in a 5x5 array, which keeps 3 of the vectors as they are, but the last two are reflected so their angle is kept.

Published on 10 Apr 2026 - 21:16

List Question

Markov chain, multiplication of the matrix of transitions probabilities with itself

Global minimum of $f(x)=\langle Ax,x \rangle +2 \langle x,b \rangle+c$

On an inner product condition between symmetric matrices

What does "Matrix indexed for..." mean?

When is a matrix the cosine of another matrix?

Derivative of a Cross product

Sum/Product of two Infinitely Divisible matrices is Infinitely Divisible?

Finding the Jacobian matrix of an intergral

How to compute the following divergence

The negative definiteness by deleting row and column

If $P,Q\ge 0;P+Q=I$, how to prove $||P-Q||_2\le1$

basis of direct sum of matrix algebras

Optimization problem with Mahalanobis distance

On the concavity of a log-det function

Creating a transformation matrix in a 5x5 array, which keeps 3 of the vectors as they are, but the last two are reflected so their angle is kept.

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