List questions from group-actions

Published on 23 Sep 2016 - 4:24

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Does group isomorphism preserve orbits?

Published on 30 Mar 2026 - 1:26

763

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Quotient of compact group action

Published on 26 Sep 2016 - 15:17

165

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Algebra transitive action (Isaacs 4.1)

Published on 26 Sep 2016 - 23:54

112

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canonical action of G acting on its subsets

Published on 28 Sep 2016 - 18:28

79

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If $[G:H]=m$, and $N\unlhd H$ why $G/N\cong K\leq \text{S}_m$?

Published on 30 Mar 2026 - 1:30

672

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Centralizer of a group is the intersection of Stabilizers

Published on 29 Sep 2016 - 17:18

52

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A question about the action of group on set.

Published on 02 Oct 2016 - 13:48

1.1k

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$D_{2n}$ Acting on the set consisting of Opposite Pairs of Vertices of a regular n-gon

Published on 26 Mar 2026 - 21:13

236

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Extracting connectedness of a topological group G from its action on a connected space X

Published on 28 Mar 2026 - 5:22

407

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Action by left coset multiplication

Published on 29 Mar 2026 - 5:42

151

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Question about homomorphisms between symmetric groups

Published on 05 Oct 2016 - 9:09

1.7k

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Doubly transitive actions

Published on 05 Oct 2016 - 18:26

168

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Is $g\cdot U$ open for continuous group action and open $U$?

Published on 06 Oct 2016 - 4:33

140

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Group acts on a topological space

Published on 07 Oct 2016 - 16:22

List Question

Free actions of the circle on itself

Does group isomorphism preserve orbits?

Quotient of compact group action

Algebra transitive action (Isaacs 4.1)

canonical action of G acting on its subsets

If $[G:H]=m$, and $N\unlhd H$ why $G/N\cong K\leq \text{S}_m$?

Centralizer of a group is the intersection of Stabilizers

A question about the action of group on set.

$D_{2n}$ Acting on the set consisting of Opposite Pairs of Vertices of a regular n-gon

Extracting connectedness of a topological group G from its action on a connected space X

Action by left coset multiplication

Question about homomorphisms between symmetric groups

Doubly transitive actions

Is $g\cdot U$ open for continuous group action and open $U$?

Group acts on a topological space

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