List questions from group-actions

Published on 04 Mar 2019 - 20:24

60

Views

If $b, c \in G$ act on $T$ and fix disjoint (but nonempty) sets of vertices, then $bc$ doesn't fix any vertex

Published on 25 Mar 2026 - 20:27

967

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Group actions of $D_5$

Published on 26 Mar 2026 - 2:54

904

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Can a group act on the empty set?

Published on 10 Mar 2019 - 10:43

58

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Compute a set $S$ given information about how it is acted upon transitively by $D_8$

Published on 26 Mar 2026 - 2:54

91

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Prove that $\operatorname{Stab}_G(y) \cong\operatorname{Stab}_G(x).$

Published on 13 Mar 2019 - 18:43

307

Views

Orbit of a Permutation

Published on 14 Mar 2019 - 15:22

85

Views

Why minimal actions of a Abelian group is not proximal unless the action be tivial?

Published on 16 Mar 2019 - 17:39

44

Views

What are the orbits for this action of $\mathrm{SO}(2)$ on $S_3$?

Published on 19 Mar 2019 - 21:58

644

Views

Is there a tensor product of $G$-sets?

Published on 19 Mar 2019 - 22:48

71

Views

Confused to prove Group Actions

Published on 20 Mar 2019 - 8:11

102

Views

continuous action on the sphere

Published on 20 Mar 2019 - 20:08

46

Views

Dixon&Mortimer exercise involving size of orbits under subgroup of point stabilizer of given primitive permutation group

Published on 21 Mar 2019 - 9:01

66

Views

Algorithm to find representatives of orbits when group of permutations acts on set of mappings

Published on 21 Mar 2019 - 14:38

19

Views

What is the action of a primitive permutation group of type SD?

Published on 22 Mar 2019 - 8:09

List Question

Proving a mapping is a group action

If $b, c \in G$ act on $T$ and fix disjoint (but nonempty) sets of vertices, then $bc$ doesn't fix any vertex

Group actions of $D_5$

Can a group act on the empty set?

Compute a set $S$ given information about how it is acted upon transitively by $D_8$

Prove that $\operatorname{Stab}_G(y) \cong\operatorname{Stab}_G(x).$

Orbit of a Permutation

Why minimal actions of a Abelian group is not proximal unless the action be tivial?

What are the orbits for this action of $\mathrm{SO}(2)$ on $S_3$?

Is there a tensor product of $G$-sets?

Confused to prove Group Actions

continuous action on the sphere

Dixon&Mortimer exercise involving size of orbits under subgroup of point stabilizer of given primitive permutation group

Algorithm to find representatives of orbits when group of permutations acts on set of mappings

What is the action of a primitive permutation group of type SD?

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