List questions from matrix-calculus

Published on 25 Mar 2026 - 7:42

99

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Number of Solutions to the Problem: Minimize $|| A - Afc^T / c^T f ||^2$ such that $\sum_i c_i = 1$

Published on 25 Mar 2026 - 1:18

867

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A matrix calculus problem in backpropagation encountered when studying Deep Learning

Published on 25 Mar 2026 - 15:38

124

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minimize norm $||C-A^TB ||^2$ by taking derivative with respect to vector

Published on 25 Mar 2026 - 18:21

123

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I need help understanding partial derivation of a matrix

Published on 29 Oct 2018 - 21:30

48

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Idempotent matrix algebra

Published on 30 Oct 2018 - 18:02

643

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Derivative $\|\operatorname{diag}(X^T A X) - y\|^2_2$ with respect to $A$?

Published on 30 Oct 2018 - 20:06

248

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Trouble with taking the derivative for neural network

Published on 25 Mar 2026 - 6:00

3.3k

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Gradient of $M \mapsto x^T M x$

Published on 25 Mar 2026 - 1:16

195

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Ordinary Least Squared derivation using Index Notation

Published on 25 Mar 2026 - 11:08

152

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Inverse function on matrices with help of Cayley-Hamilton theorem?

Published on 25 Mar 2026 - 4:39

3.6k

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Why does the 2x2 matrix with a trace equal to 1 not contain any zero vectors?

Published on 04 Nov 2018 - 0:14

89

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representing a matrix by a column vector

Published on 04 Nov 2018 - 4:51

248

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Find the farthest rotation matrix in $\mathrm{SO}(3)$ from a given matrix.

Published on 18 Mar 2026 - 15:06

1.7k

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How to get a derivative with respect to scalar for $f(a)=y^T(aI+B)^{-1}y$?

Published on 05 Nov 2018 - 18:05

List Question

Hessian wrt. MATRIX-VARIABLE for a Quadratic Inner Product.

Number of Solutions to the Problem: Minimize $|| A - Afc^T / c^T f ||^2$ such that $\sum_i c_i = 1$

A matrix calculus problem in backpropagation encountered when studying Deep Learning

minimize norm $||C-A^TB ||^2$ by taking derivative with respect to vector

I need help understanding partial derivation of a matrix

Idempotent matrix algebra

Derivative $\|\operatorname{diag}(X^T A X) - y\|^2_2$ with respect to $A$?

Trouble with taking the derivative for neural network

Gradient of $M \mapsto x^T M x$

Ordinary Least Squared derivation using Index Notation

Inverse function on matrices with help of Cayley-Hamilton theorem?

Why does the 2x2 matrix with a trace equal to 1 not contain any zero vectors?

representing a matrix by a column vector

Find the farthest rotation matrix in $\mathrm{SO}(3)$ from a given matrix.

How to get a derivative with respect to scalar for $f(a)=y^T(aI+B)^{-1}y$?

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