List questions from group-actions

Published on 16 Jul 2023 - 5:59

42

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Getting back group action on manifold from Lie algebra homomorphism

Published on 16 Jul 2023 - 11:25

161

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Abelian, transitive subgroup of $S_A$, then $\sigma(a)\neq a$ for $\forall\sigma \in G-\{1\}$ and $\forall a$

Published on 17 Jul 2023 - 1:56

146

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Homogeneity of Topological Manifolds: Are they all quotients of topological groups?

Published on 25 Mar 2026 - 14:35

78

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Why is the quotient of Cayley graph by its group action homeomorphic to a wedge of circles?

Published on 26 Mar 2026 - 6:22

127

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Is the universal cover of a classifying space always $\mathbb{R}^n$ if it is finite dimensional?

Published on 25 Mar 2026 - 16:02

29

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Getting generating set from fundumental domain

Published on 20 Jul 2023 - 9:29

58

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Transitivity condition for monoid action

Published on 24 Feb 2026 - 8:14

49

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When are homeomorphic $G$-spaces isomorphic?

Published on 23 Feb 2026 - 5:09

49

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$\tau\in N_{S_A}(H)$ then $\tau$ stabilizes both $F(H)$ and $A-F(H)$

Published on 24 Jul 2023 - 14:11

40

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A Lie group $G$ be acting on a Riemannian manifold $M$. Is the map $G\times M\to \mathbb{R}$ given by $(g,x)\mapsto \lVert dg_x\rVert$ continuous?

Published on 25 Jul 2023 - 19:17

48

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In the regular wreath product $W = H \wr G$, every subgroup of $G$ is the centralizer of some element

Published on 25 Mar 2026 - 7:45

22

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Homogenous geodesic metric spaces

Published on 25 Mar 2026 - 16:08

148

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Properties of the obvious action of $Aut(G)$ on $G$

Published on 26 Mar 2026 - 19:03

135

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How do group actions connect to group presentation?

Published on 31 Mar 2026 - 14:19

List Question

Transitive Group and its Normal Subgroup

Getting back group action on manifold from Lie algebra homomorphism

Abelian, transitive subgroup of $S_A$, then $\sigma(a)\neq a$ for $\forall\sigma \in G-\{1\}$ and $\forall a$

Homogeneity of Topological Manifolds: Are they all quotients of topological groups?

Why is the quotient of Cayley graph by its group action homeomorphic to a wedge of circles?

Is the universal cover of a classifying space always $\mathbb{R}^n$ if it is finite dimensional?

Getting generating set from fundumental domain

Transitivity condition for monoid action

When are homeomorphic $G$-spaces isomorphic?

$\tau\in N_{S_A}(H)$ then $\tau$ stabilizes both $F(H)$ and $A-F(H)$

A Lie group $G$ be acting on a Riemannian manifold $M$. Is the map $G\times M\to \mathbb{R}$ given by $(g,x)\mapsto \lVert dg_x\rVert$ continuous?

In the regular wreath product $W = H \wr G$, every subgroup of $G$ is the centralizer of some element

Homogenous geodesic metric spaces

Properties of the obvious action of $Aut(G)$ on $G$

How do group actions connect to group presentation?

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