List questions from group-cohomology

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What is the group cohomology set $H^1(\mathbb{Z},GL_n(\mathbb{Z}_p^{ur}))$?

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A basic question on group cohomology

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Cocycles and nontrivial central extensions

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Does virtual cohomological dimension tell us anything about vanishing?

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Cohomology of an elliptic surface with section

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Reconciling two definitions of group cohomology

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Is there a bigger class of groups such that $h(G)\leq cd(G)$?

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Subgroups of any possible cohomological dimension in a FP group

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178

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Best books on finite group extensions

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Understanding a lemma in Sharifi's Class Field Theory notes

Published on 27 Mar 2026 - 4:17

List Question

If the invariants are 0, then are the coinvariants also trivial?

Relationship between Cohomology groups/rings related to a topological group

What is the group cohomology set $H^1(\mathbb{Z},GL_n(\mathbb{Z}_p^{ur}))$?

A basic question on group cohomology

Cocycles and nontrivial central extensions

Explicit description of Künneth-formula terms in Baumslag, Dyer Heller

Does virtual cohomological dimension tell us anything about vanishing?

What is "torsion" in the context of cohomology, and why is it important?

Cohomology of an elliptic surface with section

What is $H^2(U(1),\mathbb Z_2)$?

Reconciling two definitions of group cohomology

Is there a bigger class of groups such that $h(G)\leq cd(G)$?

Subgroups of any possible cohomological dimension in a FP group

Best books on finite group extensions

Understanding a lemma in Sharifi's Class Field Theory notes

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