List questions from algebraic-groups

Published on 26 Mar 2026 - 21:26

21

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Is the Frobenius twist of a representation a fully faithful functor?

Published on 25 Mar 2024 - 17:30

33

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Lie-Kolchin theorem, unipotent matrices and Ad-unipotent elements

Published on 27 Mar 2024 - 3:29

747

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Frobenius map in scheme theory

Published on 12 Jan 2015 - 12:29

139

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Fixed point subspaces $V^B$ and $V^G$ for a Borel subgroup $B\subset G$ coincide

Published on 18 Jan 2015 - 10:43

246

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structure of commutative algebraic groups

Published on 20 Jan 2015 - 17:01

55

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line bundle descents?

Published on 26 Jan 2015 - 9:25

45

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Is $\mathbb{C}[T \times_T T] \cong \mathbb{C}[T]$?

Published on 28 Jan 2015 - 14:09

61

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Does $G\to X$ have dense image iff $T_eG \to T_{\theta(e)}X$ is surjective?

Published on 28 Jan 2015 - 18:24

75

Views

Is $\mathbb{C}[T \times_T T] = (\mathbb{C}[T] \otimes \mathbb{C}[T])^T$?

Published on 29 Jan 2015 - 2:51

86

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$\mathbb{G}_a$ or $\mathbb{G}_m$ as subgroups of Affine Algebraic Groups

Published on 02 Feb 2015 - 9:27

171

Views

Describe invariants using coaction.

Published on 03 Feb 2015 - 13:08

554

Views

Lie algebras of reductive groups

Published on 25 Mar 2026 - 14:27

65

Views

Poisson actions defined in terms of coactions.

Published on 25 Mar 2026 - 14:22

144

Views

How to show that $\text{Spec}(\mathbb{Z}[x_1,x_2,\ldots, x_n]) \cong (\mathbb{G}_m)^n$?

Published on 16 Feb 2015 - 5:50

List Question

Using étale fundamental group to show unramifiedness of Tate module

Is the Frobenius twist of a representation a fully faithful functor?

Lie-Kolchin theorem, unipotent matrices and Ad-unipotent elements

Frobenius map in scheme theory

Fixed point subspaces $V^B$ and $V^G$ for a Borel subgroup $B\subset G$ coincide

structure of commutative algebraic groups

line bundle descents?

Is $\mathbb{C}[T \times_T T] \cong \mathbb{C}[T]$?

Does $G\to X$ have dense image iff $T_eG \to T_{\theta(e)}X$ is surjective?

Is $\mathbb{C}[T \times_T T] = (\mathbb{C}[T] \otimes \mathbb{C}[T])^T$?

$\mathbb{G}_a$ or $\mathbb{G}_m$ as subgroups of Affine Algebraic Groups

Describe invariants using coaction.

Lie algebras of reductive groups

Poisson actions defined in terms of coactions.

How to show that $\text{Spec}(\mathbb{Z}[x_1,x_2,\ldots, x_n]) \cong (\mathbb{G}_m)^n$?

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