List questions from group-cohomology

Published on 28 Jul 2015 - 5:32

45

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What is Relator Matrix

Published on 25 Mar 2026 - 11:25

440

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Completion and algebraic closure commutable

Published on 06 Aug 2015 - 10:54

563

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When does a representation of $H\subset G$ on $V$ extend to a representation of $G$ on $V$?

Published on 07 Aug 2015 - 14:29

377

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Computing group cohomology in magma?

Published on 25 Mar 2026 - 12:55

105

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Crossed homomorphisms between power series groups

Published on 27 Mar 2026 - 5:04

949

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Restriction-Co Restriction Homomorphism

Published on 28 Aug 2015 - 17:03

197

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Why is $H^(K(\pi, 1); A) \cong \text{Ext}^_{\mathbb{Z}[\pi]}(\mathbb{Z}, A)$?

Published on 26 Mar 2026 - 3:11

178

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how to calculate $H_2(S^{2}\times S^{1}\# S^{2}\times S^{1}\# S^{2}\times S^{1})$ ?

Published on 06 Sep 2015 - 1:35

117

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Group cohomology of $\mathbb{R}^\times$

Published on 08 Sep 2015 - 0:38

50

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Tuples of cohomology classes coherently related via restrictions and conjugations

Published on 11 Sep 2015 - 1:57

142

Views

A nonsplit extension of a nonabelian finite simple group by a cyclic group of odd prime order

Published on 25 Mar 2026 - 23:40

185

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What short exact sequence induces the Bockstein for $H^*(G,k)$?

Published on 22 Sep 2015 - 4:36

238

Views

Conjugation action of $G$ on $N$ induces an action of $G/N$ on $H_{\ast}N$.

Published on 22 Sep 2015 - 13:44

155

Views

Does the Bockstein commute with maps induced by group homomorphisms?

Published on 24 Sep 2015 - 5:00

List Question

Making sense of the term $H^1(N,A)^{G/N}$ in the inflation-restriction exact sequence.

What is Relator Matrix

Completion and algebraic closure commutable

When does a representation of $H\subset G$ on $V$ extend to a representation of $G$ on $V$?

Computing group cohomology in magma?

Crossed homomorphisms between power series groups

Restriction-Co Restriction Homomorphism

Why is $H^(K(\pi, 1); A) \cong \text{Ext}^_{\mathbb{Z}[\pi]}(\mathbb{Z}, A)$?

how to calculate $H_2(S^{2}\times S^{1}\# S^{2}\times S^{1}\# S^{2}\times S^{1})$ ?

Group cohomology of $\mathbb{R}^\times$

Tuples of cohomology classes coherently related via restrictions and conjugations

A nonsplit extension of a nonabelian finite simple group by a cyclic group of odd prime order

What short exact sequence induces the Bockstein for $H^*(G,k)$?

Conjugation action of $G$ on $N$ induces an action of $G/N$ on $H_{\ast}N$.

Does the Bockstein commute with maps induced by group homomorphisms?

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