Question

Given a multiplication table for a set $G={a,b,c,d}$, determine whether it is a group.

score 1.1k · Answer 1 · 2026-05-10 18:50:57

1.1k

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Given a multiplication table for a set $G={a,b,c,d}$, determine whether it is a group.

Published on 10 May 2026 - 18:50

score 1.1k · Answer 2 · 2026-05-07 08:47:29

1.1k

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Center of Simple Abelian Group and Simple Nonabelian Group

Published on 07 May 2026 - 8:47

score 100 · Answer 3 · 2026-04-17 10:35:46

100

Views

Subgroup of $Z_{108}$ of order 9

Published on 17 Apr 2026 - 10:35

score 207 · Answer 4 · 2026-05-03 17:34:30

207

Views

What's the image of the function $f(x)=(3x+2^{v_2(x)})$ on the Prufer 2-group?

Published on 03 May 2026 - 17:34

score 490 · Answer 5 · 2026-05-10 12:37:26

490

Views

Two abelian groups are isomorphic iff their corresponding sylow subgroups are isomorphic.

Published on 10 May 2026 - 12:37

score 91 · Answer 6 · 2026-05-07 18:00:22

91

Views

Can you generalize the Triangle group to other polygons?

Published on 07 May 2026 - 18:00

score 267 · Answer 7 · 2026-05-05 10:07:51

267

Views

Neumann Theorem about finite unions of cosets

Published on 05 May 2026 - 10:07

score 660 · Answer 8 · 2026-05-03 06:51:24

660

Views

Homomorphic images of $p$-adic integers

Published on 03 May 2026 - 6:51

score 419 · Answer 9 · 2026-04-29 12:15:11

419

Views

Abelian group between two free abelian groups of the same (finite) rank.

Published on 29 Apr 2026 - 12:15

score 2.2k · Answer 10 · 2026-04-12 10:17:59

2.2k

Views

how to prove $\mathbb Z_n$ has divisors of zero if and only if $n$ is not prime

Published on 12 Apr 2026 - 10:17

score 311 · Answer 11 · 2026-04-29 12:48:34

311

Views

Calculating the index of a subgroup containing the normalizer of a Sylow $p$ subgroup

Published on 29 Apr 2026 - 12:48

score 174 · Answer 12 · 2026-05-04 03:59:17

174

Views

A $G$-module admits a surjection from a $G$-module, which is free as an abelian group, such that the kernel is free

Published on 04 May 2026 - 3:59

score 2.4k · Answer 13 · 2026-05-10 15:19:04

2.4k

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A Gift Problem for the Year 2018

Published on 10 May 2026 - 15:19

score 1.1k · Answer 14 · 2026-05-10 13:58:21

1.1k

Views

Definition of matrix Lie group

Published on 10 May 2026 - 13:58

score 444 · Answer 15 · 2026-05-10 16:56:51

444

Views

Mysterious Characterization of $A_5$ inside $S_5$

Published on 10 May 2026 - 16:56

List Question

Given a multiplication table for a set $G={a,b,c,d}$, determine whether it is a group.

Center of Simple Abelian Group and Simple Nonabelian Group

Subgroup of $Z_{108}$ of order 9

What's the image of the function $f(x)=(3x+2^{v_2(x)})$ on the Prufer 2-group?

Two abelian groups are isomorphic iff their corresponding sylow subgroups are isomorphic.

Can you generalize the Triangle group to other polygons?

Neumann Theorem about finite unions of cosets

Homomorphic images of $p$-adic integers

Abelian group between two free abelian groups of the same (finite) rank.

how to prove $\mathbb Z_n$ has divisors of zero if and only if $n$ is not prime

Calculating the index of a subgroup containing the normalizer of a Sylow $p$ subgroup

A $G$-module admits a surjection from a $G$-module, which is free as an abelian group, such that the kernel is free

A Gift Problem for the Year 2018

Definition of matrix Lie group

Mysterious Characterization of $A_5$ inside $S_5$

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