List questions from permutation-matrices

Published on 07 May 2026 - 18:58

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How does a permutation $P$ affect the singular value $\sigma_{\text{max}}(Q^\top P^\top Q)$ for orthogonal $Q$?

Published on 10 May 2026 - 19:35

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How many combinations of permutation matrices are there?

Published on 25 Apr 2026 - 21:35

558

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Permutation matrix homomorphism

Published on 11 Apr 2026 - 4:20

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Is an orthogonal matrix necessarily a permutation matrix?

Published on 20 Apr 2026 - 21:42

2.4k

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$\{0,1\}$-matrix and permutation matrices

Published on 07 May 2026 - 17:58

148

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Are these two permutation matrices equivalent?

Published on 25 Mar 2026 - 23:34

116

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Whether solutions of a particular matrix equation are only the permutation matrices

Published on 26 Mar 2026 - 1:06

3.6k

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Determinant of elementary permutation matrix

Published on 26 Mar 2026 - 1:07

2.7k

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Characterizing sums of permutation matrices

Published on 26 Mar 2026 - 1:02

262

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Finding the permutation matrix that "cyclic shifts"

Published on 26 Mar 2026 - 1:00

466

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Find the number of $4 \times 4$ orthogonal matrices whose entries are either $0$ or $1$

Published on 25 Mar 2026 - 22:06

1.5k

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An orthogonal matrix with non-negative entries is a permutation matrix

Published on 08 Apr 2026 - 18:18

211

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Birkhoff decomposition with maximization objective.

Published on 22 Apr 2026 - 8:40

380

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How to prove every permutation matrix has some unity power?

Published on 25 Mar 2026 - 23:36

List Question

Which row exchanges will produce another Sudoku matrix?

How does a permutation $P$ affect the singular value $\sigma_{\text{max}}(Q^\top P^\top Q)$ for orthogonal $Q$?

How many combinations of permutation matrices are there?

Permutation matrix homomorphism

Is an orthogonal matrix necessarily a permutation matrix?

$\{0,1\}$-matrix and permutation matrices

Are these two permutation matrices equivalent?

Whether solutions of a particular matrix equation are only the permutation matrices

Determinant of elementary permutation matrix

Characterizing sums of permutation matrices

Finding the permutation matrix that "cyclic shifts"

Find the number of $4 \times 4$ orthogonal matrices whose entries are either $0$ or $1$

An orthogonal matrix with non-negative entries is a permutation matrix

Birkhoff decomposition with maximization objective.

How to prove every permutation matrix has some unity power?

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