List questions from group-cohomology

Published on 25 Mar 2026 - 15:12

49

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$Z\pi \cong Z\oplus Z$ and so $P \cong Z$

Published on 26 Mar 2026 - 16:09

90

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Proving thm. 22.37 in "Modern Classical Homotopy theory" by Jeffery Strom

Published on 27 Mar 2026 - 8:57

52

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Functoriality of first homology of group

Published on 19 Aug 2020 - 15:54

89

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Commutativity of local artin/reciprocity map

Published on 29 Mar 2026 - 4:47

478

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Discrete topological modules for profinite groups

Published on 26 Mar 2026 - 9:45

67

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What is $\hat{H}^*(C_2 \times C_2, \mathbb{F}_2)$ as a ring?

Published on 08 Sep 2020 - 19:24

248

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Understanding cup products for Tate cohomology group

Published on 15 Sep 2020 - 14:22

146

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$\mathbb Z$ dual of a projective resolution is exact

Published on 29 Mar 2026 - 4:47

114

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Deriving the group cohomology of $D_{2n}$ from that of $D_2$

Published on 28 Mar 2026 - 15:21

69

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Group multiplications in $Spin(d)$ via $(a,q) \in (\mathbb{Z}/2, SO(d))$

Published on 26 Mar 2026 - 9:42

132

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Boundary Map of Bar Resolution vs. Face Map of the Nerve of a Group

Published on 29 Mar 2026 - 16:02

185

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Proof of Lyndon-Hochschild-Serre spectral

Published on 26 Mar 2026 - 19:01

115

Views

Third homology group over and abelian group

Published on 01 Nov 2020 - 18:06

134

Views

Pushout square of groups, and group cohomology

Published on 04 Nov 2020 - 2:02

List Question

Understanding the map $F^\times \cap E^{\times n} \to H^1(G,\mu_n)$

$Z\pi \cong Z\oplus Z$ and so $P \cong Z$

Proving thm. 22.37 in "Modern Classical Homotopy theory" by Jeffery Strom

Functoriality of first homology of group

Commutativity of local artin/reciprocity map

Discrete topological modules for profinite groups

What is $\hat{H}^*(C_2 \times C_2, \mathbb{F}_2)$ as a ring?

Understanding cup products for Tate cohomology group

$\mathbb Z$ dual of a projective resolution is exact

Deriving the group cohomology of $D_{2n}$ from that of $D_2$

Group multiplications in $Spin(d)$ via $(a,q) \in (\mathbb{Z}/2, SO(d))$

Boundary Map of Bar Resolution vs. Face Map of the Nerve of a Group

Proof of Lyndon-Hochschild-Serre spectral

Third homology group over and abelian group

Pushout square of groups, and group cohomology

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