Question

What is the relationship between the kernel of a homomorphism and its degree as a covering map?

score 101 · Answer 1 · 2026-04-09 07:23:05

101

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What is the relationship between the kernel of a homomorphism and its degree as a covering map?

Published on 09 Apr 2026 - 7:23

score 35 · Answer 2 · 2026-04-13 17:37:24

35

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(real) unipotent subgroup is always generated by one parameter unipotent subgroups?

Published on 13 Apr 2026 - 17:37

score 76 · Answer 3 · 2026-04-17 12:44:44

76

Views

How to compute or find a maximal torus?

Published on 17 Apr 2026 - 12:44

score 43 · Answer 4 · 2026-03-25 23:37:11

43

Views

Alternative description of generalized orthogonal group.

Published on 25 Mar 2026 - 23:37

score 177 · Answer 5 · 2026-04-15 08:57:55

177

Views

Weights in SU(3)

Published on 15 Apr 2026 - 8:57

score 57 · Answer 6 · 2026-03-26 19:05:47

57

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Question on double covers of Lie groups and Spin groups isomorphisms

Published on 26 Mar 2026 - 19:05

score 179 · Answer 7 · 2026-04-16 08:59:07

179

Views

Why is this map from a $G$-torsor to $G$ smooth?

Published on 16 Apr 2026 - 8:59

score 93 · Answer 8 · 2026-03-26 01:25:11

93

Views

What does the quotient space $\operatorname{SL}(n) / \sim$ look like? Is it a quotient manifold?

Published on 26 Mar 2026 - 1:25

score 73 · Answer 9 · 2026-04-12 09:53:49

73

Views

A proof of the fact that Heisenberg group is a closed subgroup of $GL(3,\mathbb R).

Published on 12 Apr 2026 - 9:53

score 153 · Answer 10 · 2026-04-14 14:42:37

153

Views

Is the isometry group of a finite volume negatively curved manifold finite?

Published on 14 Apr 2026 - 14:42

score 109 · Answer 11 · 2026-04-13 17:40:50

109

Views

Is the isometry group of a complete finite volume negatively curved manifold finite?

Published on 13 Apr 2026 - 17:40

score 109 · Answer 12 · 2026-04-16 01:40:14

Why does the covering map $\pi: \tilde{G} \longrightarrow G$ of a connected Lie group $G$ induces a homeomorphism $\tilde{G}/\ker \cong G$?

score 124 · Answer 13 · 2026-03-25 09:29:24

124

Views

What is the value of homotopy group $\pi_1(SU(2)\times U(1))$

Published on 25 Mar 2026 - 9:29

score 152 · Answer 14 · 2026-04-11 18:48:11

A discrete and faithful higher genus closed surface group representation $\Gamma \to \mathrm{PSL}(2, \mathbb{C})$ with at least one parabolic value?

score 73 · Answer 15 · 2026-04-12 16:29:13

73

Views

Non-isomorphic Lie groups which are isomorphic as topological groups

Published on 12 Apr 2026 - 16:29

List Question

What is the relationship between the kernel of a homomorphism and its degree as a covering map?

(real) unipotent subgroup is always generated by one parameter unipotent subgroups?

How to compute or find a maximal torus?

Alternative description of generalized orthogonal group.

Weights in SU(3)

Question on double covers of Lie groups and Spin groups isomorphisms

Why is this map from a $G$-torsor to $G$ smooth?

What does the quotient space $\operatorname{SL}(n) / \sim$ look like? Is it a quotient manifold?

A proof of the fact that Heisenberg group is a closed subgroup of $GL(3,\mathbb R).

Is the isometry group of a finite volume negatively curved manifold finite?

Is the isometry group of a complete finite volume negatively curved manifold finite?

Why does the covering map $\pi: \tilde{G} \longrightarrow G$ of a connected Lie group $G$ induces a homeomorphism $\tilde{G}/\ker \cong G$?

What is the value of homotopy group $\pi_1(SU(2)\times U(1))$

A discrete and faithful higher genus closed surface group representation $\Gamma \to \mathrm{PSL}(2, \mathbb{C})$ with at least one parabolic value?

Non-isomorphic Lie groups which are isomorphic as topological groups

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