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15
Math.TechQA.Club
2026-03-17 17:21:16
135
Views
Relation between $G$-orbits and Cycle Decomposition of a Permutaion.
Published on
17 Mar 2026 - 17:21
#permutations
#group-actions
#cyclic-decomposition
228
Views
Fixed points of finite order mapping classes
Published on
22 Mar 2026 - 14:45
#group-actions
#hyperbolic-geometry
#teichmueller-theory
#mapping-class-group
1.2k
Views
Grothendieck's Galois theory: fundamental theorem
Published on
10 Jun 2018 - 7:56
#category-theory
#galois-theory
#group-actions
377
Views
$SU(2)$ acts transitively on $\mathbb{CP}^1$
Published on
25 Mar 2026 - 4:38
#group-theory
#projective-geometry
#group-actions
#projective-space
#linear-groups
240
Views
Normalizer, stabilizer and orbits
Published on
12 Jun 2018 - 4:43
#abstract-algebra
#factoring
#group-actions
179
Views
Classify cohomogeneity one actions up to what?
Published on
12 Jun 2018 - 10:29
#differential-geometry
#lie-groups
#group-actions
931
Views
How can I show the action of left translation by a topological group $G$ on itself is a continuous action using the ordinary definition of continuity?
Published on
25 Mar 2026 - 3:22
#general-topology
#continuity
#proof-writing
#group-actions
#topological-groups
189
Views
Can a group action be defined by its orbits?
Published on
16 Jun 2018 - 20:09
#abstract-algebra
#group-theory
#group-actions
62
Views
Induced action is proper discontinuous
Published on
17 Jun 2018 - 14:27
#abstract-algebra
#general-topology
#group-actions
197
Views
Does the space of matrices above rank $k$ admit a transitive Lie group action?
Published on
25 Mar 2026 - 3:03
#linear-algebra
#lie-groups
#group-actions
#matrix-rank
#homogeneous-spaces
1.5k
Views
Counter example to the claim that orbits of $S$ constitute a partition of $S$.
Published on
18 Jun 2018 - 10:03
#abstract-algebra
#group-theory
#finite-groups
#group-actions
358
Views
Prove that $H\cap gHg^{-1}$ is normal
Published on
19 Jun 2018 - 7:35
#group-theory
#group-actions
#normal-subgroups
501
Views
Moment map for Hamiltonian action $\Bbb S^1 \circlearrowright \Bbb C^n$.
Published on
21 Jun 2018 - 0:43
#differential-geometry
#lie-groups
#complex-geometry
#group-actions
#symplectic-geometry
183
Views
Different definitions of proper actions
Published on
24 Jun 2018 - 18:54
#general-topology
#group-actions
#covering-spaces
335
Views
Does the following object have such property?
Published on
26 Jun 2018 - 17:47
#combinatorics
#group-theory
#permutations
#order-theory
#group-actions
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