List questions from group-cohomology

125

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How many conjugacy classes of subgroups of order $p$ does $\operatorname{GL}_{3}(\Bbb Z / p\Bbb Z)$ have?

Published on 21 Aug 2019 - 11:42

86

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References for Group cohomology with concrete calculations.

Published on 05 Sep 2019 - 14:12

157

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About Tate Cohomology of Cyclic Groups

Published on 26 Mar 2026 - 6:13

126

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group cohomology over a trivial module (complex )

Published on 09 Sep 2019 - 20:34

23

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A homomorphism between two group cohomology

Published on 29 Sep 2019 - 0:36

319

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Central extensions of elementary abelian p-groups

Published on 25 Mar 2026 - 6:01

1.9k

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How do you compute group cohomology in practice?

Published on 19 Mar 2014 - 20:33

1.8k

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Understanding the Bockstein homomorphism in group cohomology

Published on 01 Apr 2014 - 2:00

437

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Second cohomology group of a perfect group

Published on 04 Apr 2014 - 8:54

115

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Showing that $\operatorname {Br}(\Bbb F_q)=0$

Published on 25 Mar 2026 - 23:16

104

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Computing $H^\bullet(\Bbb Z/n\Bbb Z)$

Published on 25 Mar 2026 - 11:00

221

Views

$\operatorname{Br}(\Bbb Q_{47})$

Published on 25 Mar 2026 - 23:10

208

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Group cohomology of mapping-class-group

Published on 09 May 2014 - 4:32

402

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Why do we have that Hom is an exact functor in the situation described below?

Published on 15 May 2014 - 17:07

147

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Recovering a character from a cohomology class

Published on 11 Jun 2014 - 23:31

List Question

How many conjugacy classes of subgroups of order $p$ does $\operatorname{GL}_{3}(\Bbb Z / p\Bbb Z)$ have?

References for Group cohomology with concrete calculations.

About Tate Cohomology of Cyclic Groups

group cohomology over a trivial module (complex )

A homomorphism between two group cohomology

Central extensions of elementary abelian p-groups

How do you compute group cohomology in practice?

Understanding the Bockstein homomorphism in group cohomology

Second cohomology group of a perfect group

Showing that $\operatorname {Br}(\Bbb F_q)=0$

Computing $H^\bullet(\Bbb Z/n\Bbb Z)$

$\operatorname{Br}(\Bbb Q_{47})$

Group cohomology of mapping-class-group

Why do we have that Hom is an exact functor in the situation described below?

Recovering a character from a cohomology class

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