Question

Codimension of singular locus of quotient V/G

score 230 · Answer 1 · 2026-03-25 01:27:23

230

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Codimension of singular locus of quotient V/G

Published on 25 Mar 2026 - 1:27

score 294 · Answer 2 · 2018-06-05 15:33:43

294

Views

How to show that the coordinate ring $\mathbb{Q}[S]$ is isomorphic to the group algebra $\mathbb{Q} Hom(S, \mathbb{G}_m)$?

Published on 05 Jun 2018 - 15:33

score 505 · Answer 3 · 2018-06-08 19:22:29

505

Views

Is the normalizer of a maximal torus in the centralizer of its split component connected?

Published on 08 Jun 2018 - 19:22

score 222 · Answer 4 · 2018-06-11 17:50:58

222

Views

$\operatorname{Aut}(G)=G(k)$ for a smooth algebraic group over $k$

Published on 11 Jun 2018 - 17:50

score 132 · Answer 5 · 2018-06-12 16:24:48

132

Views

Jordan decomposition and eigenvalues under adjoint action

Published on 12 Jun 2018 - 16:24

score 73 · Answer 6 · 2018-06-13 13:32:55

73

Views

Why do this trick works?

Published on 13 Jun 2018 - 13:32

score 89 · Answer 7 · 2018-06-14 22:15:19

89

Views

Are all real forms of an algebraic Lie algebra algebraic?

Published on 14 Jun 2018 - 22:15

score 113 · Answer 8 · 2018-06-15 16:45:41

113

Views

Parabolic and closed subgroups

Published on 15 Jun 2018 - 16:45

score 167 · Answer 9 · 2018-06-17 16:39:04

167

Views

How to show that the image of a rational map is open?

Published on 17 Jun 2018 - 16:39

score 646 · Answer 10 · 2018-06-18 21:18:06

646

Views

A reductive algebraic group with no Borel subgroup

Published on 18 Jun 2018 - 21:18

score 33 · Answer 11 · 2018-06-20 08:39:13

33

Views

Equivalence of categroies between representations of $\operatorname{Sp}(2g;\mathbb{Q})$ and $\mathfrak{sp}(2g;\mathbb{Q})$.

Published on 20 Jun 2018 - 8:39

score 52 · Answer 12 · 2026-03-20 01:22:55

52

Views

Proving that for a reductive group $G$, $GV_r$ is closed

Published on 20 Mar 2026 - 1:22

score 114 · Answer 13 · 2026-03-17 17:42:35

114

Views

Lie group and algebraic group with isomorphic Lie algebra

Published on 17 Mar 2026 - 17:42

score 118 · Answer 14 · 2026-03-20 13:22:58

118

Views

Unramified principal series and basis for $I(\chi)^B$

Published on 20 Mar 2026 - 13:22

score 167 · Answer 15 · 2026-03-20 05:47:15

167

Views

Irreducible admissible representation of a minimal parabolic is finite dimensional

Published on 20 Mar 2026 - 5:47

List Question

Codimension of singular locus of quotient V/G

How to show that the coordinate ring $\mathbb{Q}[S]$ is isomorphic to the group algebra $\mathbb{Q} Hom(S, \mathbb{G}_m)$?

Is the normalizer of a maximal torus in the centralizer of its split component connected?

$\operatorname{Aut}(G)=G(k)$ for a smooth algebraic group over $k$

Jordan decomposition and eigenvalues under adjoint action

Why do this trick works?

Are all real forms of an algebraic Lie algebra algebraic?

Parabolic and closed subgroups

How to show that the image of a rational map is open?

A reductive algebraic group with no Borel subgroup

Equivalence of categroies between representations of $\operatorname{Sp}(2g;\mathbb{Q})$ and $\mathfrak{sp}(2g;\mathbb{Q})$.

Proving that for a reductive group $G$, $GV_r$ is closed

Lie group and algebraic group with isomorphic Lie algebra

Unramified principal series and basis for $I(\chi)^B$

Irreducible admissible representation of a minimal parabolic is finite dimensional

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