Question

Why is $\operatorname{Hom}_{\textrm{AG}}(k^\times,k^\times)\cong\mathbb{Z}$?

score 101 · Answer 1 · 2015-10-04 01:24:26

101

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Why is $\operatorname{Hom}_{\textrm{AG}}(k^\times,k^\times)\cong\mathbb{Z}$?

Published on 04 Oct 2015 - 1:24

score 483 · Answer 2 · 2015-10-05 05:50:36

483

Views

Is the commutator subgroup $[B,B]$ contained in the unipotent radical $R_u(B)$?

Published on 05 Oct 2015 - 5:50

score 619 · Answer 3 · 2015-10-06 01:55:43

619

Views

Why is a parabolic subgroup $P$ connected?

Published on 06 Oct 2015 - 1:55

score 62 · Answer 4 · 2015-10-06 02:24:41

62

Views

Is Springer wrong here? Principal $F$-open sets

Published on 06 Oct 2015 - 2:24

score 918 · Answer 5 · 2015-10-06 18:44:53

918

Views

Bijective homomorphism of algebraic groups is isomorphism (characteristic 0)

Published on 06 Oct 2015 - 18:44

score 1k · Answer 6 · 2015-10-07 02:14:53

1k

Views

Centralizer $C_G(T)$ of a maximal torus $T$ is in every Borel subgroup containing $T$?

Published on 07 Oct 2015 - 2:14

score 211 · Answer 7 · 2015-10-18 21:49:35

211

Views

Quotient of algebraic group by subgroup with trivial character group

Published on 18 Oct 2015 - 21:49

score 149 · Answer 8 · 2026-03-24 22:19:39

149

Views

Finite solvable subgroup in $GL_2(\mathbb{C})$ which is not contained in Borel subgroup

Published on 24 Mar 2026 - 22:19

score 38 · Answer 9 · 2026-03-23 10:03:26

38

Views

Quotient of algebraic groups $SO_n/SO_{n-1}$

Published on 23 Mar 2026 - 10:03

score 4.5k · Answer 10 · 2015-11-01 14:02:21

4.5k

Views

Is this group of matrices cyclic?

Published on 01 Nov 2015 - 14:02

score 485 · Answer 11 · 2026-03-25 20:38:20

485

Views

Orbits of $SL(3, \mathbb{C})/B$

Published on 25 Mar 2026 - 20:38

score 357 · Answer 12 · 2015-11-03 11:42:08

357

Views

If a complex Lie group has the structure of an algebraic group, is this structure unique?

Published on 03 Nov 2015 - 11:42

score 23 · Answer 13 · 2015-11-03 15:50:08

23

Views

paper of Ihara, why must eigenvalues of an element of a torsion-free cocompact lattice be in the ground field?

Published on 03 Nov 2015 - 15:50

score 32 · Answer 14 · 2015-11-04 02:18:18

32

Views

reference request: existence of a complete model of a G-variety

Published on 04 Nov 2015 - 2:18

score 63 · Answer 15 · 2015-11-04 04:38:18

63

Views

What is $\operatorname{ad} x$ in the Mackey Formula?

Published on 04 Nov 2015 - 4:38

List Question

Why is $\operatorname{Hom}_{\textrm{AG}}(k^\times,k^\times)\cong\mathbb{Z}$?

Is the commutator subgroup $[B,B]$ contained in the unipotent radical $R_u(B)$?

Why is a parabolic subgroup $P$ connected?

Is Springer wrong here? Principal $F$-open sets

Bijective homomorphism of algebraic groups is isomorphism (characteristic 0)

Centralizer $C_G(T)$ of a maximal torus $T$ is in every Borel subgroup containing $T$?

Quotient of algebraic group by subgroup with trivial character group

Finite solvable subgroup in $GL_2(\mathbb{C})$ which is not contained in Borel subgroup

Quotient of algebraic groups $SO_n/SO_{n-1}$

Is this group of matrices cyclic?

Orbits of $SL(3, \mathbb{C})/B$

If a complex Lie group has the structure of an algebraic group, is this structure unique?

paper of Ihara, why must eigenvalues of an element of a torsion-free cocompact lattice be in the ground field?

reference request: existence of a complete model of a G-variety

What is $\operatorname{ad} x$ in the Mackey Formula?

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