Question

Morphism of affine group schemes gives a morphism of hopf-algebras? (But not by Yoneda I guess?)

score 191 · Answer 1 · 2026-04-17 11:45:37

191

Views

Morphism of affine group schemes gives a morphism of hopf-algebras? (But not by Yoneda I guess?)

Published on 17 Apr 2026 - 11:45

score 78 · Answer 2 · 2026-04-15 05:44:43

78

Views

Question on isogeny of abelian varieties and principal homogeneous spaces

Published on 15 Apr 2026 - 5:44

score 91 · Answer 3 · 2026-04-09 08:34:49

91

Views

Is every $\mathcal O$-structure an $\mathcal O$-group scheme?

Published on 09 Apr 2026 - 8:34

score 49 · Answer 4 · 2026-04-16 03:25:43

49

Views

if an Affine group scheme G isn't solvable then G(R) isn't solvable for some R

Published on 16 Apr 2026 - 3:25

score 86 · Answer 5 · 2026-04-12 08:13:16

86

Views

Mumford's Geometric Invariant Theory proof of proposition 0.1

Published on 12 Apr 2026 - 8:13

score 70 · Answer 6 · 2026-04-16 08:18:39

70

Views

Example of commutative Hopf algebra over the integers

Published on 16 Apr 2026 - 8:18

score 715 · Answer 7 · 2026-04-12 01:57:39

715

Views

Is the fiber product of the connected component of a group scheme connected?

Published on 12 Apr 2026 - 1:57

score 561 · Answer 8 · 2026-04-11 16:14:37

561

Views

Quotient of group schemes and its rational points.

Published on 11 Apr 2026 - 16:14

score 121 · Answer 9 · 2026-05-10 09:09:11

121

Views

Group schemes decomposition

Published on 10 May 2026 - 9:09

score 97 · Answer 10 · 2026-04-11 18:03:52

97

Views

Group structure at $k$-valued points induces a group scheme?

Published on 11 Apr 2026 - 18:03

score 204 · Answer 11 · 2026-04-16 01:32:54

204

Views

Isomorphism of affine group schemes of rank 2

Published on 16 Apr 2026 - 1:32

score 182 · Answer 12 · 2026-04-14 20:50:42

182

Views

short exact sequences of linear algebraic groups and $K$-forms

Published on 14 Apr 2026 - 20:50

score 112 · Answer 13 · 2026-04-11 16:37:23

112

Views

Split extension of linear algebraic groups given by unipotent radicals and reductive groups

Published on 11 Apr 2026 - 16:37

score 142 · Answer 14 · 2026-04-09 08:00:55

142

Views

Quotientes of afine group schemes

Published on 09 Apr 2026 - 8:00

score 265 · Answer 15 · 2026-04-12 21:03:30

265

Views

Base change is exact for algebraic groups

Published on 12 Apr 2026 - 21:03

List Question

Morphism of affine group schemes gives a morphism of hopf-algebras? (But not by Yoneda I guess?)

Question on isogeny of abelian varieties and principal homogeneous spaces

Is every $\mathcal O$-structure an $\mathcal O$-group scheme?

if an Affine group scheme G isn't solvable then G(R) isn't solvable for some R

Mumford's Geometric Invariant Theory proof of proposition 0.1

Example of commutative Hopf algebra over the integers

Is the fiber product of the connected component of a group scheme connected?

Quotient of group schemes and its rational points.

Group schemes decomposition

Group structure at $k$-valued points induces a group scheme?

Isomorphism of affine group schemes of rank 2

short exact sequences of linear algebraic groups and $K$-forms

Split extension of linear algebraic groups given by unipotent radicals and reductive groups

Quotientes of afine group schemes

Base change is exact for algebraic groups

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