List questions from matrix-calculus

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If the Jacobian is the first derivative, the Hessian is the second derivative, what is the third derivative called?

Published on 16 Apr 2026 - 14:26

485

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Derivative of $BAA^Tx$ with respect to $A$

Published on 12 Apr 2026 - 2:30

96

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Writing this matrix expression in terms of vec operator

Published on 02 May 2026 - 5:16

1.1k

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Derivative w.r.t orthogonal matrix

Published on 10 May 2026 - 15:41

539

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Maximum number of non-zero elements for an (n, n) matrix product

Published on 14 Apr 2026 - 22:16

3.1k

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Calculating the matrix exponential of rotation matrix

Published on 10 May 2026 - 14:05

230

Views

Extending the Proof for $\det(AB) = \det(A) \cdot \det(B)$ from the $3 \times 3$ to the $n \times n$ case

Published on 10 Apr 2026 - 1:36

62

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A set of matrix with 2 properties

Published on 15 Apr 2026 - 7:15

277

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Simple matrix derivative

Published on 30 Apr 2026 - 9:35

63

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Scaling differentiation matrices

Published on 29 Apr 2026 - 12:44

46

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Is it always true for vector and matrix multiplication?

Published on 14 Apr 2026 - 19:35

1.3k

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$AB = C$, prove if $C$ is invertible, then $A$ and $B$

Published on 14 Apr 2026 - 1:12

119

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Geometric Series of Discounted Matrices

Published on 10 May 2026 - 15:19

226

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How do you solve $\dot{X} = UX$?

Published on 13 Apr 2026 - 7:38

59

Views

Minimisation of a scalar function with respect to a vector

Published on 29 Apr 2026 - 12:51

List Question

If the Jacobian is the first derivative, the Hessian is the second derivative, what is the third derivative called?

Derivative of $BAA^Tx$ with respect to $A$

Writing this matrix expression in terms of vec operator

Derivative w.r.t orthogonal matrix

Maximum number of non-zero elements for an (n, n) matrix product

Calculating the matrix exponential of rotation matrix

Extending the Proof for $\det(AB) = \det(A) \cdot \det(B)$ from the $3 \times 3$ to the $n \times n$ case

A set of matrix with 2 properties

Simple matrix derivative

Scaling differentiation matrices

Is it always true for vector and matrix multiplication?

$AB = C$, prove if $C$ is invertible, then $A$ and $B$

Geometric Series of Discounted Matrices

How do you solve $\dot{X} = UX$?

Minimisation of a scalar function with respect to a vector

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