List questions from automorphism-group

Published on 01 May 2022 - 16:20

113

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Is the composition of two "pure" inner automorphisms of a Lie algebra a pure inner automorphism?

Published on 03 May 2022 - 6:43

47

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A subgroup $G$ of the group of analytic isomorphisms of the open unit disc $Aut(D(0,1))$ is the entire group

Published on 01 Apr 2026 - 2:30

38

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Degree of subfield fixed by single automorphism

Published on 04 May 2022 - 19:39

68

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Decomposition of $\mathrm{Aut}(\mathbb{Z}_n)$

Published on 05 May 2022 - 13:11

71

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Automorphism group of the projective line $\mathbb{P}^1(\mathbb{Z})$

Published on 06 May 2022 - 13:22

70

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Is the set of bijective functions that are invariant under a subset is a subgroup of their automorphisms?

Published on 12 May 2022 - 22:16

159

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Let $G_1,G_2$ be groups. $G_1 \cong G_2 \implies\operatorname{Aut}(G_1) \cong \operatorname{Aut}(G_2)$.

Published on 17 May 2022 - 10:00

113

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Structural stability of Arnold's Cat Map

Published on 29 Mar 2026 - 5:42

194

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Twisted graded algebras [J.J. Zhang]

Published on 20 May 2022 - 15:43

159

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Inner automorphisms of Pauli strings in the unitary subgroup of matrices

Published on 27 Mar 2026 - 18:09

253

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Automorphism group of $\mathbb{Q}/\mathbb{Z}$

Published on 25 May 2022 - 12:52

279

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Is the order of a field automorphism equal to the degree over the fixed-point subfield?

Published on 04 Jun 2022 - 14:20

132

Views

A proof on automorphism groups of hypersurfaces

Published on 04 Jun 2022 - 20:46

114

Views

How do subgroups of the inner automorphisms of a group look like?

Published on 26 Mar 2026 - 8:03

List Question

Question regarding Galois group of a polynomial.

Is the composition of two "pure" inner automorphisms of a Lie algebra a pure inner automorphism?

A subgroup $G$ of the group of analytic isomorphisms of the open unit disc $Aut(D(0,1))$ is the entire group

Degree of subfield fixed by single automorphism

Decomposition of $\mathrm{Aut}(\mathbb{Z}_n)$

Automorphism group of the projective line $\mathbb{P}^1(\mathbb{Z})$

Is the set of bijective functions that are invariant under a subset is a subgroup of their automorphisms?

Let $G_1,G_2$ be groups. $G_1 \cong G_2 \implies\operatorname{Aut}(G_1) \cong \operatorname{Aut}(G_2)$.

Structural stability of Arnold's Cat Map

Twisted graded algebras [J.J. Zhang]

Inner automorphisms of Pauli strings in the unitary subgroup of matrices

Automorphism group of $\mathbb{Q}/\mathbb{Z}$

Is the order of a field automorphism equal to the degree over the fixed-point subfield?

A proof on automorphism groups of hypersurfaces

How do subgroups of the inner automorphisms of a group look like?

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