List questions from matrix-calculus

Published on 15 Apr 2017 - 16:48

64

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Computing $\frac{\partial }{{\partial {\mathbf{m}}}}\cos 6\left[ {{{\cos }^{ - 1}}\left( {{\mathbf{a}} \cdot {\mathbf{m}}} \right)} \right]$

Published on 16 Apr 2017 - 18:50

217

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What vectors am I allowed to multiply a matrix by when calculating it's norm?

Published on 18 Apr 2017 - 20:41

570

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On the derivative of the matrix exponential

Published on 28 Mar 2026 - 0:35

149

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Concavity of a simple matrix equation

Published on 11 Apr 2026 - 22:54

4.8k

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Determine the matrix that rotates the points in the plane counter-clockwise through an angle of $π/2$ about the origin, and ...

Published on 22 Apr 2017 - 20:23

1.6k

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Find a $3\times 3$ matrix $A\not = I_3$ such that $A^3 = I_{3}$

Published on 23 Apr 2017 - 9:15

6.1k

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How to calculate gradient of $f(x)=x^TAx+b^Tx$?

Published on 23 Apr 2017 - 9:56

188

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If $A$ is a positive operator, with $\|A\|<1$, then $\|I-A\|<1$, without using spectral theory

Published on 11 Apr 2026 - 17:32

18

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Does this kernelized regularized latent factor model have a biconvex objective?

Published on 11 Apr 2026 - 22:20

85

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How can I prove that if a matrix $A$ is symmetric so is its transponse $A^T$

Published on 11 Apr 2026 - 10:11

91

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Solve without matrix inversion.

Published on 11 Apr 2026 - 2:57

56

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Is this true or false, and what is the explanation?

Published on 25 Apr 2017 - 5:09

380

Views

Computing the matrix derivative of $W^T T W$ w.r.t. W

Published on 29 Mar 2026 - 4:11

624

Views

Book recommendation over Matrix Theory

Published on 08 Apr 2026 - 19:09

List Question

Partial derivative of matrix-vector product

Computing $\frac{\partial }{{\partial {\mathbf{m}}}}\cos 6\left[ {{{\cos }^{ - 1}}\left( {{\mathbf{a}} \cdot {\mathbf{m}}} \right)} \right]$

What vectors am I allowed to multiply a matrix by when calculating it's norm?

On the derivative of the matrix exponential

Concavity of a simple matrix equation

Determine the matrix that rotates the points in the plane counter-clockwise through an angle of $π/2$ about the origin, and ...

Find a $3\times 3$ matrix $A\not = I_3$ such that $A^3 = I_{3}$

How to calculate gradient of $f(x)=x^TAx+b^Tx$?

If $A$ is a positive operator, with $\|A\|<1$, then $\|I-A\|<1$, without using spectral theory

Does this kernelized regularized latent factor model have a biconvex objective?

How can I prove that if a matrix $A$ is symmetric so is its transponse $A^T$

Solve without matrix inversion.

Is this true or false, and what is the explanation?

Computing the matrix derivative of $W^T T W$ w.r.t. W

Book recommendation over Matrix Theory

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