List questions from group-extensions

Published on 02 Dec 2019 - 17:08

104

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Extension of a group $G$ by a commutative group $F$

Published on 02 Dec 2019 - 19:16

42

Views

Proving this function is an isomorphism

Published on 04 Dec 2019 - 0:15

49

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Number of embeddings $F_q^n \rightarrow F_q^{n+m}$

Published on 18 Dec 2019 - 19:42

423

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Why are group extensions and split extensions defined the way they are?

Published on 30 Dec 2019 - 15:46

252

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Understanding group extensions

Published on 02 Jan 2020 - 1:58

62

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Calculate $H^{2}(\mathbb{Z}_{2} ; Z(T))$

Published on 05 Jan 2020 - 0:11

99

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Concise notation for the central extension defined by a cocycle

Published on 07 Jan 2020 - 6:42

125

Views

Isomorphism of $\mathbb{Z}\ltimes_A \mathbb{Z}^m$ and $\mathbb{Z}\ltimes_B \mathbb{Z}^m$

Published on 08 Jan 2020 - 16:48

115

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Center of a split metabelian group of order $p^nq$ is direct summand.

Published on 22 Mar 2026 - 6:58

114

Views

MacLane's Homology Book exercise doubt

Published on 22 Feb 2020 - 15:14

30

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Correct Way of Writing Extension of Group

Published on 24 Feb 2020 - 0:25

58

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Are there any references on extensions $G$ of a cyclic group $C_2$ by $2$-groups $P$?

Published on 03 Mar 2020 - 4:41

46

Views

Obstruction to extensions

Published on 17 Mar 2020 - 20:30

144

Views

Schur-Zassenhaus Theorem

Published on 18 Mar 2020 - 17:42

List Question

Constructing a group action from a group extension + a section

Extension of a group $G$ by a commutative group $F$

Proving this function is an isomorphism

Number of embeddings $F_q^n \rightarrow F_q^{n+m}$

Why are group extensions and split extensions defined the way they are?

Understanding group extensions

Calculate $H^{2}(\mathbb{Z}_{2} ; Z(T))$

Concise notation for the central extension defined by a cocycle

Isomorphism of $\mathbb{Z}\ltimes_A \mathbb{Z}^m$ and $\mathbb{Z}\ltimes_B \mathbb{Z}^m$

Center of a split metabelian group of order $p^nq$ is direct summand.

MacLane's Homology Book exercise doubt

Correct Way of Writing Extension of Group

Are there any references on extensions $G$ of a cyclic group $C_2$ by $2$-groups $P$?

Obstruction to extensions

Schur-Zassenhaus Theorem

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