List questions from matrices

Published on 13 Apr 2026 - 11:27

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Elements of a diagonal unitary matrix

Published on 13 Apr 2026 - 22:06

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I was asked to evaluate the determinant of the

Published on 16 Apr 2026 - 11:43

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What does $C^{-3}$ mean?

Published on 13 Apr 2026 - 18:23

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Finding correlation coefficient from covariance matrix

Published on 12 Apr 2026 - 14:28

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Uniqueness of Cholesky Decomposition

Published on 13 Apr 2026 - 6:23

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Find all square matrices $A$ satisfying ${}^t\!A = -A$.

Published on 16 Apr 2026 - 5:29

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Prove $p_{cA} = c^n \ p\left( \frac{t}{c}\right) $ is the characteristic polynomial of $\ cA $

Published on 16 Apr 2026 - 4:36

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Rank of block triangular matrix

Published on 29 Apr 2026 - 12:52

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The matrix $I_n - v^t x$ is invertible when $\langle v, x \rangle \neq 1$

Published on 15 Apr 2026 - 0:58

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Casting convolution to cosine similarity

Published on 12 Apr 2026 - 19:30

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number of combinations for 5x5 matrix where up to one cell in each row and column can be selected

Published on 13 Apr 2026 - 17:57

102

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Index of image subgroup of $\mathbb{Z}^2$ by a linear transform

Published on 13 Apr 2026 - 14:37

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Proving that $2 \times 2$ matrices under matrix multiplication belong to a group

Published on 13 Apr 2026 - 2:29

450

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When does $AA^T$ commute with $A^T$?

Published on 13 Apr 2026 - 22:42

List Question

Disproving 'If $A^2 = AB$, $A =B$' specific proof

Elements of a diagonal unitary matrix

I was asked to evaluate the determinant of the

What does $C^{-3}$ mean?

Finding correlation coefficient from covariance matrix

Uniqueness of Cholesky Decomposition

Find all square matrices $A$ satisfying ${}^t\!A = -A$.

Prove $p_{cA} = c^n \ p\left( \frac{t}{c}\right) $ is the characteristic polynomial of $\ cA $

Rank of block triangular matrix

The matrix $I_n - v^t x$ is invertible when $\langle v, x \rangle \neq 1$

Casting convolution to cosine similarity

number of combinations for 5x5 matrix where up to one cell in each row and column can be selected

Index of image subgroup of $\mathbb{Z}^2$ by a linear transform

Proving that $2 \times 2$ matrices under matrix multiplication belong to a group

When does $AA^T$ commute with $A^T$?

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