Question

If any order preserving permutation submatrix of $A\otimes B$ belongs to $\{A,B\}$ does $A=B$?

score 82 · Answer 1 · 2026-04-16 09:50:29

82

Views

If any order preserving permutation submatrix of $A\otimes B$ belongs to $\{A,B\}$ does $A=B$?

Published on 16 Apr 2026 - 9:50

score 53 · Answer 2 · 2026-04-15 12:36:17

53

Views

Prove that the result of linear function is the intersection of all permutation

Published on 15 Apr 2026 - 12:36

score 107 · Answer 3 · 2026-04-15 17:10:02

107

Views

Prove that exist $x\in \left\{ 1,...,14 \right\}$ such that $\sigma(x)=x$, where $\sigma\in S_{14}$ and $|\sigma|=28$?

Published on 15 Apr 2026 - 17:10

score 312 · Answer 4 · 2026-04-14 12:40:53

312

Views

How many pairs of sets that have no element in common?

Published on 14 Apr 2026 - 12:40

score 560 · Answer 5 · 2026-04-16 04:15:57

560

Views

Number of combinations, repeating and not repeating

Published on 16 Apr 2026 - 4:15

score 28 · Answer 6 · 2026-03-25 19:05:45

28

Views

5 cards can be drawn from a single deck of 52 cards

Published on 25 Mar 2026 - 19:05

score 82 · Answer 7 · 2026-04-16 10:54:39

82

Views

Prove that in a group of permutation $S_7$ every two elements with order $10$ are conjugated. Prove that this fact is not truth in $S_9$.

Published on 16 Apr 2026 - 10:54

score 92 · Answer 8 · 2026-04-13 22:00:26

92

Views

How many homomorphisms are there from $\mathbb D_5$ to $\mathbb A_4$?

Published on 13 Apr 2026 - 22:00

score 87 · Answer 9 · 2026-04-09 14:52:40

87

Views

How to modify normal distribution to take into account properties of Mahonian numbers

Published on 09 Apr 2026 - 14:52

score 269 · Answer 10 · 2026-04-14 10:08:33

269

Views

Computing the cycle decomposition of the composition of permutations.

Published on 14 Apr 2026 - 10:08

score 36 · Answer 11 · 2026-04-16 03:04:07

36

Views

$S_n$ symmetric group of order n and elements of order n

Published on 16 Apr 2026 - 3:04

score 270 · Answer 12 · 2026-04-17 01:41:46

270

Views

The number of sequences of length n from the set of K elements, so that each element occurs in the sequence

Published on 17 Apr 2026 - 1:41

score 18 · Answer 13 · 2026-04-17 09:54:26

18

Views

Fill red and white balls into slots

Published on 17 Apr 2026 - 9:54

score 880 · Answer 14 · 2026-04-15 12:55:11

880

Views

What is the distribution of the number of inversions for a random permutation?

Published on 15 Apr 2026 - 12:55

score 61 · Answer 15 · 2026-04-09 21:30:11

61

Views

Permutation confusion

Published on 09 Apr 2026 - 21:30

List Question

If any order preserving permutation submatrix of $A\otimes B$ belongs to $\{A,B\}$ does $A=B$?

Prove that the result of linear function is the intersection of all permutation

Prove that exist $x\in \left\{ 1,...,14 \right\}$ such that $\sigma(x)=x$, where $\sigma\in S_{14}$ and $|\sigma|=28$?

How many pairs of sets that have no element in common?

Number of combinations, repeating and not repeating

5 cards can be drawn from a single deck of 52 cards

Prove that in a group of permutation $S_7$ every two elements with order $10$ are conjugated. Prove that this fact is not truth in $S_9$.

How many homomorphisms are there from $\mathbb D_5$ to $\mathbb A_4$?

How to modify normal distribution to take into account properties of Mahonian numbers

Computing the cycle decomposition of the composition of permutations.

$S_n$ symmetric group of order n and elements of order n

The number of sequences of length n from the set of K elements, so that each element occurs in the sequence

Fill red and white balls into slots

What is the distribution of the number of inversions for a random permutation?

Permutation confusion

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