List questions from group-cohomology

Published on 30 Apr 2026 - 19:19

465

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Cohomology of Symmetric Group 3 using Lyndon-Hochschild-Serre spectral sequence

Published on 10 May 2026 - 14:07

85

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Cohomology in groups

Published on 11 Apr 2026 - 7:46

83

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Does $H^{\bullet}(G, \mathbb{Z})$ have a coalgebra structure?

Published on 08 Apr 2026 - 17:28

223

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Writting Legendre Symbol as an element of group cohomology of $\mathbb{Q}$

Published on 28 Apr 2026 - 20:09

337

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Algebraic 1-cocycles and Galois gerbs

Published on 10 May 2026 - 18:43

1.2k

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De Rham cohomology groups of $\mathbb{R}^n$

Published on 10 May 2026 - 16:12

103

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Extension that split for all p-Sylow

Published on 10 May 2026 - 13:46

109

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Order of $Z^1(G,A)$, the group of $1$-cocycles, when both $G$ and $A$ are finite

Published on 15 Apr 2026 - 17:50

53

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Axioms for the generalized cohomology

Published on 15 Apr 2026 - 6:16

516

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Computing Pontryagin Square

Published on 17 Apr 2026 - 7:37

378

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Computing cohomology of dihedral group in detail

Published on 11 Apr 2026 - 13:47

36

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Why does $\underline{cd}\:G\leq silp\:G\leq\underline{cd}+1$ hold?

Published on 16 Apr 2026 - 5:00

181

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Showing that any central group extension of a finite group $G$ by the trivial $G$-module $\mathbb Q$ is a semidirect product

Published on 10 May 2026 - 13:51

476

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Cohomology ring of $H^*(A_5;\mathbb Z_2)$?

Published on 11 Apr 2026 - 14:06

List Question

Homology of an equivariant product

Cohomology of Symmetric Group 3 using Lyndon-Hochschild-Serre spectral sequence

Cohomology in groups

Does $H^{\bullet}(G, \mathbb{Z})$ have a coalgebra structure?

Writting Legendre Symbol as an element of group cohomology of $\mathbb{Q}$

Algebraic 1-cocycles and Galois gerbs

De Rham cohomology groups of $\mathbb{R}^n$

Extension that split for all p-Sylow

Order of $Z^1(G,A)$, the group of $1$-cocycles, when both $G$ and $A$ are finite

Axioms for the generalized cohomology

Computing Pontryagin Square

Computing cohomology of dihedral group in detail

Why does $\underline{cd}\:G\leq silp\:G\leq\underline{cd}+1$ hold?

Showing that any central group extension of a finite group $G$ by the trivial $G$-module $\mathbb Q$ is a semidirect product

Cohomology ring of $H^*(A_5;\mathbb Z_2)$?

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