List questions from group-cohomology

Published on 11 Feb 2020 - 9:31

115

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Restriction maps in the cohomology of $(\mathbb{Z}/p\mathbb{Z})^2$

Published on 11 Feb 2020 - 11:28

177

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Does $\mathbb{F}_2$ have a finite free resolution as an $\mathbb{F}_2[\mathbb{Q}]$-module?

Published on 16 Feb 2020 - 13:59

45

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surjectivity of a map in Cohomology of Number Fields by Neukirch

Published on 20 Feb 2020 - 14:22

184

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Equivalence of categories, related to Galois descent

Published on 25 Mar 2026 - 11:07

48

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Problem in Proof of Theorem $5.3$ Chapter $2$ of "Cohomology of Groups by Kenneth S.Brown"

Published on 26 Feb 2020 - 13:14

112

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$\mathbb{Z}_p$ has cohomological dimension 1

Published on 22 Mar 2026 - 20:41

105

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Group cohomology: restriction map to the normalizer of sylow $p$-subgroup

Published on 16 Mar 2020 - 15:50

47

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Obstruction to extensions

Published on 25 Mar 2026 - 10:59

145

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Schur-Zassenhaus Theorem

Published on 25 Mar 2026 - 11:00

80

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Classifcation of $p$-groups with cyclic subgroup of index $p$

Published on 25 Mar 2026 - 20:53

75

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What are $\tilde{H_}(K;\mathbb{Z})$ and $\tilde{H^}(K;\mathbb{Z})$?

Published on 25 Mar 2026 - 12:25

120

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Induction and Restriction of Scalars

Published on 26 Mar 2020 - 20:14

110

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Calculating the cochain complex of $S^2 \times S^4. $

Published on 25 Mar 2026 - 12:25

94

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Problem 22.39(a) in " Modern classical homotopy Theory " by Jeffery Strom on pg.511.

Published on 25 Mar 2026 - 13:55

List Question

Is it true that $H_n(C_{}(X)^{nor} \otimes M) \cong H_n(C_{}^{\neq}(X) \otimes M)$?

Restriction maps in the cohomology of $(\mathbb{Z}/p\mathbb{Z})^2$

Does $\mathbb{F}_2$ have a finite free resolution as an $\mathbb{F}_2[\mathbb{Q}]$-module?

surjectivity of a map in Cohomology of Number Fields by Neukirch

Equivalence of categories, related to Galois descent

Problem in Proof of Theorem $5.3$ Chapter $2$ of "Cohomology of Groups by Kenneth S.Brown"

$\mathbb{Z}_p$ has cohomological dimension 1

Group cohomology: restriction map to the normalizer of sylow $p$-subgroup

Obstruction to extensions

Schur-Zassenhaus Theorem

Classifcation of $p$-groups with cyclic subgroup of index $p$

What are $\tilde{H_}(K;\mathbb{Z})$ and $\tilde{H^}(K;\mathbb{Z})$?

Induction and Restriction of Scalars

Calculating the cochain complex of $S^2 \times S^4. $

Problem 22.39(a) in " Modern classical homotopy Theory " by Jeffery Strom on pg.511.

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