Question

On the integers $\mathbb{Z}$ acting on a group (not necessarily finitely generated)

score 86 · Answer 1 · 2026-03-28 05:59:28

86

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On the integers $\mathbb{Z}$ acting on a group (not necessarily finitely generated)

Published on 28 Mar 2026 - 5:59

score 322 · Answer 2 · 2026-04-01 18:31:47

322

Views

What does the Outer automorphism group act on? If an automorphism preserves conjugacy classes, is it inner?

Published on 01 Apr 2026 - 18:31

score 98 · Answer 3 · 2026-04-02 20:14:26

98

Views

What is the "correct" definition of a $G$-bundle/a structure group?

Published on 02 Apr 2026 - 20:14

score 160 · Answer 4 · 2026-04-02 13:25:23

160

Views

The conjugation action $\mathbb{H}^*\times \mathbb{H} \rightarrow \mathbb{H}$ restricted to unit-quaternions yields an orthogonal representation

Published on 02 Apr 2026 - 13:25

score 98 · Answer 5 · 2022-03-08 02:23:48

98

Views

Understanding the quotient of $S^2$ by a non-free action of $\mathbb{Z}_2$

Published on 08 Mar 2022 - 2:23

score 93 · Answer 6 · 2022-03-11 01:09:56

93

Views

Abuse of notation in the orbit stabilizer theorem proof

Published on 11 Mar 2022 - 1:09

score 178 · Answer 7 · 2026-04-05 00:52:32

178

Views

Dummit and Foote Abstract Algebra Proposition 4.1.1

Published on 05 Apr 2026 - 0:52

score 74 · Answer 8 · 2026-02-23 18:48:30

74

Views

Explanation of the relationship between geometric and algebraic qualities of Globally Riemannian Symmetric Spaces.

Published on 23 Feb 2026 - 18:48

score 177 · Answer 9 · 2022-03-14 19:55:49

177

Views

How to prove this index equality problem with group actions?

Published on 14 Mar 2022 - 19:55

score 184 · Answer 10 · 2026-03-29 13:46:39

184

Views

Automorphism group of unit disk acts transitively?

Published on 29 Mar 2026 - 13:46

score 134 · Answer 11 · 2026-04-08 23:52:38

134

Views

Property of Reynolds Operator

Published on 08 Apr 2026 - 23:52

score 93 · Answer 12 · 2026-03-28 15:36:37

93

Views

Functor $F: \mathcal{C} \to G_1$-Sets is an equivalence of categories given a natural isomorphism to equivalence $H: \mathcal{C} \to G_2$-Sets

Published on 28 Mar 2026 - 15:36

score 72 · Answer 13 · 2026-03-30 08:55:55

72

Views

Determine the conjugacy-classes in the unit-quaternions $S^3$

Published on 30 Mar 2026 - 8:55

score 74 · Answer 14 · 2026-04-05 00:56:12

74

Views

Finding the number of the group homomorphisms $G\to S_4$ ($|G|=6$) by group actions.

Published on 05 Apr 2026 - 0:56

score 57 · Answer 15 · 2026-04-06 05:16:51

57

Views

A quotient topological space that isn't Hausdorff

Published on 06 Apr 2026 - 5:16

List Question

On the integers $\mathbb{Z}$ acting on a group (not necessarily finitely generated)

What does the Outer automorphism group act on? If an automorphism preserves conjugacy classes, is it inner?

What is the "correct" definition of a $G$-bundle/a structure group?

The conjugation action $\mathbb{H}^*\times \mathbb{H} \rightarrow \mathbb{H}$ restricted to unit-quaternions yields an orthogonal representation

Understanding the quotient of $S^2$ by a non-free action of $\mathbb{Z}_2$

Abuse of notation in the orbit stabilizer theorem proof

Dummit and Foote Abstract Algebra Proposition 4.1.1

Explanation of the relationship between geometric and algebraic qualities of Globally Riemannian Symmetric Spaces.

How to prove this index equality problem with group actions?

Automorphism group of unit disk acts transitively?

Property of Reynolds Operator

Functor $F: \mathcal{C} \to G_1$-Sets is an equivalence of categories given a natural isomorphism to equivalence $H: \mathcal{C} \to G_2$-Sets

Determine the conjugacy-classes in the unit-quaternions $S^3$

Finding the number of the group homomorphisms $G\to S_4$ ($|G|=6$) by group actions.

A quotient topological space that isn't Hausdorff

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