Question

Do infinite sequences always contain consecutive repeated subsequences?

score 111 · Answer 1 · 2026-04-12 09:49:09

111

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Do infinite sequences always contain consecutive repeated subsequences?

Published on 12 Apr 2026 - 9:49

score 355 · Answer 2 · 2026-03-26 06:29:47

355

Views

Finding the order of a permutation $\sigma$ and thus using it to find $\sigma^{122}$

Published on 26 Mar 2026 - 6:29

score 48 · Answer 3 · 2026-04-01 18:36:03

48

Views

Find out order of two permutations

Published on 01 Apr 2026 - 18:36

score 584 · Answer 4 · 2026-03-26 01:07:45

584

Views

Simple proof of $A_n$ being simple?

Published on 26 Mar 2026 - 1:07

score 228 · Answer 5 · 2026-04-16 06:23:29

228

Views

What are the number of Hausdorff topologies on the set $X=\{x_1,x_2,x_3,x_4,x_5\}$?

Published on 16 Apr 2026 - 6:23

score 95 · Answer 6 · 2026-03-26 08:03:58

95

Views

One Problem Regarding Permutation

Published on 26 Mar 2026 - 8:03

score 109 · Answer 7 · 2026-04-16 00:03:28

109

Views

Number of $AB$,$BA$ in permutations of $AAAAABBBB$

Published on 16 Apr 2026 - 0:03

score 117 · Answer 8 · 2026-04-15 17:07:37

117

Views

In how many ways can we create a set of 8 elements out of 7 elements?

Published on 15 Apr 2026 - 17:07

score 376 · Answer 9 · 2026-04-16 04:20:13

376

Views

$4$ digit numbers greater then $4321$ using $0,1,2,3,4,5,$ if repetition is allowed

Published on 16 Apr 2026 - 4:20

score 45 · Answer 10 · 2026-04-17 02:38:01

45

Views

Permutation password with or in the question

Published on 17 Apr 2026 - 2:38

score 189 · Answer 11 · 2026-04-14 19:16:24

189

Views

Find an injective group homomorphism $\varphi: D_4 → Sym_4$ with $D_4$ being the dihedral group

Published on 14 Apr 2026 - 19:16

score 50 · Answer 12 · 2026-04-13 06:00:02

50

Views

The inversion map on regular normal subgroup normalizes whole group

Published on 13 Apr 2026 - 6:00

score 41 · Answer 13 · 2026-04-14 06:19:34

41

Views

Permutations of a multiset where a never exceeds b

Published on 14 Apr 2026 - 6:19

score 67 · Answer 14 · 2026-04-15 18:21:30

67

Views

Let $\mathbb F$ be field with $16807=7^5$ elements.What is the cardinality of the set given by $\{a^7-b^7:a,b\in \mathbb F\}$?

Published on 15 Apr 2026 - 18:21

score 204 · Answer 15 · 2026-04-16 12:49:49

204

Views

number of ways of arranging four pairs of socks in a line so that no adjacent socks form a pair

Published on 16 Apr 2026 - 12:49

List Question

Do infinite sequences always contain consecutive repeated subsequences?

Finding the order of a permutation $\sigma$ and thus using it to find $\sigma^{122}$

Find out order of two permutations

Simple proof of $A_n$ being simple?

What are the number of Hausdorff topologies on the set $X=\{x_1,x_2,x_3,x_4,x_5\}$?

One Problem Regarding Permutation

Number of $AB$,$BA$ in permutations of $AAAAABBBB$

In how many ways can we create a set of 8 elements out of 7 elements?

$4$ digit numbers greater then $4321$ using $0,1,2,3,4,5,$ if repetition is allowed

Permutation password with or in the question

Find an injective group homomorphism $\varphi: D_4 → Sym_4$ with $D_4$ being the dihedral group

The inversion map on regular normal subgroup normalizes whole group

Permutations of a multiset where a never exceeds b

Let $\mathbb F$ be field with $16807=7^5$ elements.What is the cardinality of the set given by $\{a^7-b^7:a,b\in \mathbb F\}$?

number of ways of arranging four pairs of socks in a line so that no adjacent socks form a pair

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