List questions from group-cohomology

Published on 05 Sep 2021 - 8:18

94

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Notation in Group cohomology and cochains

Published on 10 Sep 2021 - 17:26

185

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The order of $G$ is invertible in $\mathbb{Q}$, and so we have that $H^n(G,\mathbb{Q})=0$ for $n≥1$, why is so?

Published on 11 Sep 2021 - 19:31

273

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Bijection between isomorphism class of torsors and first cohomology set

Published on 23 Sep 2021 - 22:01

81

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What is the action on $H^1$ in Galois cohomology?

Published on 27 Mar 2026 - 15:58

115

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Free action of Group $G$ on $S^n$ gives free resolution of $\mathbb{Z}$ as a $\mathbb{Z}[G]$-module.

Published on 13 Oct 2021 - 21:50

66

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Question on Group cohomology of $C_p \times C_p$

Published on 19 Oct 2021 - 19:38

164

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Properties of 3-cocycles

Published on 21 Oct 2021 - 7:49

250

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On pairing and cup product in group cohomology

Published on 27 Mar 2026 - 15:59

42

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What Percentage of Type F Groups are not Poincare Duality Groups?

Published on 29 Mar 2026 - 5:43

364

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2-cocycles in Lie group vs Lie algebra cohomology (context of projective reps)

Published on 23 Feb 2026 - 4:41

283

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Interpretation of vanishing of cohomology groups

Published on 26 Mar 2026 - 1:34

271

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Computing Group Extension and $2$-cocycle in GAP

Published on 26 Mar 2026 - 12:40

190

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The question about the proof isomorphism between simplicial and singular homology group

Published on 26 Nov 2021 - 10:24

73

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Finiteness of group cohomology

Published on 27 Nov 2021 - 2:38

List Question

number of Schur covering groups

Notation in Group cohomology and cochains

The order of $G$ is invertible in $\mathbb{Q}$, and so we have that $H^n(G,\mathbb{Q})=0$ for $n≥1$, why is so?

Bijection between isomorphism class of torsors and first cohomology set

What is the action on $H^1$ in Galois cohomology?

Free action of Group $G$ on $S^n$ gives free resolution of $\mathbb{Z}$ as a $\mathbb{Z}[G]$-module.

Question on Group cohomology of $C_p \times C_p$

Properties of 3-cocycles

On pairing and cup product in group cohomology

What Percentage of Type F Groups are not Poincare Duality Groups?

2-cocycles in Lie group vs Lie algebra cohomology (context of projective reps)

Interpretation of vanishing of cohomology groups

Computing Group Extension and $2$-cocycle in GAP

The question about the proof isomorphism between simplicial and singular homology group

Finiteness of group cohomology

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