List questions from group-schemes

Published on 26 Aug 2021 - 18:43

28

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For an algebraic group $G$, elements in $[G,G](R)$ lies in $[(G(R')),(G(R'))]$ for a faithful flat $R'$ over $R$.

Published on 29 Aug 2021 - 15:26

21

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Why is it better to define $ SO(q) $ using Clifford algebras?

Published on 30 Aug 2021 - 10:47

113

Views

Can we construct reduced group scheme which is same group structure given an abstract group?

Published on 12 Sep 2021 - 3:10

166

Views

Neron model of multiplicative group scheme

Published on 25 Mar 2026 - 12:55

42

Views

Why Néron model is a separated scheme?

Published on 19 Oct 2021 - 18:53

173

Views

Recovering an affine group scheme from its representations

Published on 12 Dec 2021 - 5:27

153

Views

Structure ring of constant group scheme.

Published on 25 Mar 2026 - 6:08

53

Views

Is Spec $\mathbb{C}[-] $ exact?

Published on 29 Dec 2021 - 11:42

112

Views

A subscheme closed under algebraic group operations is an algebraic subgroup

Published on 13 Jan 2022 - 20:15

53

Views

Torsion at base change of group schemes

Published on 21 Jan 2022 - 7:37

100

Views

Does Repf($G$) have enough injectives?

Published on 14 Feb 2022 - 14:58

79

Views

Question on isogenies of degree d.

Published on 23 Feb 2026 - 15:17

125

Views

Example of linear algebraic group which has unique rational point

Published on 09 May 2022 - 11:20

145

Views

Criteria for splitting of exact sequences of flat $R$-algebras

Published on 05 Jun 2022 - 22:24

List Question

Understanding a map in "Algebraic Group Schemes in characteristic 0 are reduced"

For an algebraic group $G$, elements in $[G,G](R)$ lies in $[(G(R')),(G(R'))]$ for a faithful flat $R'$ over $R$.

Why is it better to define $ SO(q) $ using Clifford algebras?

Can we construct reduced group scheme which is same group structure given an abstract group?

Neron model of multiplicative group scheme

Why Néron model is a separated scheme?

Recovering an affine group scheme from its representations

Structure ring of constant group scheme.

Is Spec $\mathbb{C}[-] $ exact?

A subscheme closed under algebraic group operations is an algebraic subgroup

Torsion at base change of group schemes

Does Repf($G$) have enough injectives?

Question on isogenies of degree d.

Example of linear algebraic group which has unique rational point

Criteria for splitting of exact sequences of flat $R$-algebras

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