List questions from automorphism-group

Published on 25 Mar 2026 - 8:09

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Which cyclic groups are automorphism groups?

Published on 26 Mar 2026 - 12:40

54

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Identifying automorphisms of the Klein four group with $S_3$

Published on 07 Mar 2023 - 22:52

105

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No automorphisms of order $p^2$

Published on 25 Mar 2026 - 9:48

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Listing all graph automorphisms from a set of generators (Bliss)?

Published on 26 Mar 2026 - 19:05

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Proof that $Aut(P) \cong H^2(X;\mathbb Z)$, where $P \to X$ is a principal $PU(\mathcal H)$-bundle.

Published on 26 Mar 2026 - 3:12

55

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Orders of field automorphisms of $\mathbb{C}$

Published on 14 Mar 2023 - 11:33

154

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Graph Theory - Bondy & Murty exercise 1.2.15

Published on 14 Mar 2023 - 13:23

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Example on the center of a group

Published on 16 Mar 2023 - 8:02

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If $H\unlhd G$ is abelian with $H\not\subseteq Z(G)$, there exists $g\in G$ such that conjugation by $g$ is not an inner automorphism of $H$?

Published on 23 Mar 2023 - 19:26

34

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Sign of image of square root under automorphism of cyclotomic extension

Published on 25 Mar 2026 - 19:06

27

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On the automorphism group of the quotient power series over 1 variable $\mathbb{F}_p((t))$.

Published on 14 Apr 2023 - 16:16

58

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Automorphisms and Galois Theory

Published on 20 Apr 2023 - 0:31

35

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Disk Automorphism and Convergence of Zero

Published on 20 Apr 2023 - 3:47

91

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Graph Automorphism vs Graph Isomorphism

Published on 26 Mar 2026 - 19:04

List Question

Prove that Aut($\mathbb Z \times \mathbb Z$) $\cong$ $\text{GL}_2(\mathbb Z)$

Which cyclic groups are automorphism groups?

Identifying automorphisms of the Klein four group with $S_3$

No automorphisms of order $p^2$

Listing all graph automorphisms from a set of generators (Bliss)?

Proof that $Aut(P) \cong H^2(X;\mathbb Z)$, where $P \to X$ is a principal $PU(\mathcal H)$-bundle.

Orders of field automorphisms of $\mathbb{C}$

Graph Theory - Bondy & Murty exercise 1.2.15

Example on the center of a group

If $H\unlhd G$ is abelian with $H\not\subseteq Z(G)$, there exists $g\in G$ such that conjugation by $g$ is not an inner automorphism of $H$?

Sign of image of square root under automorphism of cyclotomic extension

On the automorphism group of the quotient power series over 1 variable $\mathbb{F}_p((t))$.

Automorphisms and Galois Theory

Disk Automorphism and Convergence of Zero

Graph Automorphism vs Graph Isomorphism

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