List questions from group-cohomology

Published on 27 Nov 2019 - 11:00

39

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classification of simple discrete modules

Published on 02 Dec 2019 - 15:12

53

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an isomorphism between discrete modules over profinite groups

Published on 03 Dec 2019 - 2:55

478

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inner automorphism induces identity map on group cohomology

Published on 03 Dec 2019 - 5:05

43

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Proving this function is an isomorphism

Published on 25 Mar 2026 - 10:59

181

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surjectivity and group cohomology

Published on 05 Dec 2019 - 9:36

812

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Cohomology of the Eilenberg-Maclane space $K(\mathbb{R},1)$

Published on 25 Mar 2026 - 9:27

40

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How to compute this cohomology group algebraically

Published on 05 Dec 2019 - 20:57

160

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Why isn't profinite cohomology for $\Bbb{Z}_p$ cyclic?

Published on 08 Dec 2019 - 0:40

49

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Why quotient of free $\mathbb{Z}F$-module can be seen as a free module on $\mathbb{Z}G$, where $G$ is a quotient of $F$?

Published on 25 Mar 2026 - 12:49

34

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Application of group 4-cocycles

Published on 16 Dec 2019 - 11:42

32

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a question on genus and index

Published on 18 Dec 2019 - 18:13

362

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Obtaining the $0$th cohomology group from the Universal Coefficient Theorem

Published on 20 Dec 2019 - 0:45

85

Views

Example of a finite group for which $\mathbb Q$ is not injective.

Published on 26 Mar 2026 - 2:51

69

Views

Example of Herbrand quotient hexagon

Published on 28 Dec 2019 - 14:17

List Question

Is the non-split central extension of $\mathbb{Z}^2$ by $\mathbb{Z}_2$ virtually $\mathbb{Z}^2$?

classification of simple discrete modules

an isomorphism between discrete modules over profinite groups

inner automorphism induces identity map on group cohomology

Proving this function is an isomorphism

surjectivity and group cohomology

Cohomology of the Eilenberg-Maclane space $K(\mathbb{R},1)$

How to compute this cohomology group algebraically

Why isn't profinite cohomology for $\Bbb{Z}_p$ cyclic?

Why quotient of free $\mathbb{Z}F$-module can be seen as a free module on $\mathbb{Z}G$, where $G$ is a quotient of $F$?

Application of group 4-cocycles

a question on genus and index

Obtaining the $0$th cohomology group from the Universal Coefficient Theorem

Example of a finite group for which $\mathbb Q$ is not injective.

Example of Herbrand quotient hexagon

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