Question

Lemma 21 in the article equivariant cohomology with generalized coefficients

score 26 · Answer 1 · 2021-03-16 14:47:09

26

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Lemma 21 in the article equivariant cohomology with generalized coefficients

Published on 16 Mar 2021 - 14:47

score 78 · Answer 2 · 2021-03-18 01:09:14

78

Views

On the $G$-conjugacy and $C_G(x)$-conjugacy

Published on 18 Mar 2021 - 1:09

score 79 · Answer 3 · 2026-04-04 12:11:01

79

Views

Proof that $X/G $ is Hausdorff where $G\subset \operatorname{Homeo}(X)$, $X$ Hausdorff.

Published on 04 Apr 2026 - 12:11

score 58 · Answer 4 · 2026-04-04 12:11:01

58

Views

$X$ Hausdorff,$g:X \to X$ homeomorphism.If$G\cong \mathbb{Z}$ why $\mathbb{R}\times X/G$ Hausdorff

Published on 04 Apr 2026 - 12:11

score 152 · Answer 5 · 2021-03-22 07:28:38

152

Views

Stable point of group action

Published on 22 Mar 2021 - 7:28

score 112 · Answer 6 · 2021-03-22 20:56:12

112

Views

Relation between the order of a set and the number of orbits

Published on 22 Mar 2021 - 20:56

score 416 · Answer 7 · 2021-03-23 14:08:38

416

Views

Confusion about definition of faithful group action.

Published on 23 Mar 2021 - 14:08

score 104 · Answer 8 · 2021-03-23 17:14:06

104

Views

What does it mean that a differential form is invertible

Published on 23 Mar 2021 - 17:14

score 184 · Answer 9 · 2021-03-23 19:10:56

184

Views

If $c_1,\dots, c_h$ are the orders of the centralisers of elements of distinct conjugacy classes of a finite group, then $1/c_1+\dots+1/c_h=1$

Published on 23 Mar 2021 - 19:10

score 1.7k · Answer 10 · 2021-03-24 02:32:55

1.7k

Views

Intuition behind Group Action

Published on 24 Mar 2021 - 2:32

score 76 · Answer 11 · 2021-03-24 22:47:24

76

Views

Why is $T_{\sigma}(\sigma H)$ the kernel of $\pi_{*\sigma} : T_\sigma G \rightarrow T_{\sigma H} G/H$?

Published on 24 Mar 2021 - 22:47

score 65 · Answer 12 · 2026-03-25 19:10:37

65

Views

Understanding (GIT) quotient by action on End(W)

Published on 25 Mar 2026 - 19:10

score 111 · Answer 13 · 2026-03-30 13:22:59

111

Views

Is the (outer) semidirect product, $N \rtimes H$, ever characterized as a group of bijections on a group containing $N$?

Published on 30 Mar 2026 - 13:22

score 62 · Answer 14 · 2021-03-28 04:23:21

62

Views

Generalization on $G$-sets: is there a name for a kind of group action where $a(bx) = (ba)x$?

Published on 28 Mar 2021 - 4:23

score 85 · Answer 15 · 2026-03-29 15:16:50

85

Views

A smooth action of a Lie group on a smooth manifold. Circle Example

Published on 29 Mar 2026 - 15:16

List Question

Lemma 21 in the article equivariant cohomology with generalized coefficients

On the $G$-conjugacy and $C_G(x)$-conjugacy

Proof that $X/G $ is Hausdorff where $G\subset \operatorname{Homeo}(X)$, $X$ Hausdorff.

$X$ Hausdorff,$g:X \to X$ homeomorphism.If$G\cong \mathbb{Z}$ why $\mathbb{R}\times X/G$ Hausdorff

Stable point of group action

Relation between the order of a set and the number of orbits

Confusion about definition of faithful group action.

What does it mean that a differential form is invertible

If $c_1,\dots, c_h$ are the orders of the centralisers of elements of distinct conjugacy classes of a finite group, then $1/c_1+\dots+1/c_h=1$

Intuition behind Group Action

Why is $T_{\sigma}(\sigma H)$ the kernel of $\pi_{*\sigma} : T_\sigma G \rightarrow T_{\sigma H} G/H$?

Understanding (GIT) quotient by action on End(W)

Is the (outer) semidirect product, $N \rtimes H$, ever characterized as a group of bijections on a group containing $N$?

Generalization on $G$-sets: is there a name for a kind of group action where $a(bx) = (ba)x$?

A smooth action of a Lie group on a smooth manifold. Circle Example

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