List questions from etale-cohomology

Published on 25 Mar 2021 - 11:28

176

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Simple Calculation in Flat Cohomology

Published on 06 Apr 2021 - 17:46

49

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Is the trace computable via mod $p$ techniques?

Published on 24 Apr 2021 - 20:46

125

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Zariski cohomology of an etale sheaf vs etale cohomology.

Published on 25 Apr 2021 - 20:46

125

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An étale morphism that restricts to an isomorphism on a closed subvariety.

Published on 29 Apr 2021 - 17:35

256

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fppf/ etale Cohomology calculate with Cech cohomology

Published on 25 Mar 2026 - 14:26

107

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Simplification of links between idele class group and étale cohomology

Published on 18 May 2021 - 5:57

43

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Contraction of loops on algebraic surfaces.

Published on 12 Jul 2021 - 11:58

125

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Filtered colimits in $D(X_{\text{proét}})$

Published on 14 Jul 2021 - 23:32

53

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How should I think of the nearby cycle $\mathrm R\Psi\overline{\mathbb Q_{\ell}}$ with its Galois action on a smooth projective scheme?

Published on 16 Jul 2021 - 13:17

86

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Unramified local homomorphism

Published on 17 Jul 2021 - 16:08

244

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Pullback and etale cohomology

Published on 18 Jul 2021 - 19:42

68

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Notation for $G$-sets

Published on 24 Jul 2021 - 9:57

100

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Local etale cohomology for sheaves of abelian groups.

Published on 25 Mar 2026 - 12:41

90

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Some question on the answers (in a previous mathstackexchange page) on why the data of the sheaf on the empty set must be terminal

Published on 31 Jul 2021 - 16:32

List Question

$l$-adic cohomology of fields.

Simple Calculation in Flat Cohomology

Is the trace computable via mod $p$ techniques?

Zariski cohomology of an etale sheaf vs etale cohomology.

An étale morphism that restricts to an isomorphism on a closed subvariety.

fppf/ etale Cohomology calculate with Cech cohomology

Simplification of links between idele class group and étale cohomology

Contraction of loops on algebraic surfaces.

Filtered colimits in $D(X_{\text{proét}})$

How should I think of the nearby cycle $\mathrm R\Psi\overline{\mathbb Q_{\ell}}$ with its Galois action on a smooth projective scheme?

Unramified local homomorphism

Pullback and etale cohomology

Notation for $G$-sets

Local etale cohomology for sheaves of abelian groups.

Some question on the answers (in a previous mathstackexchange page) on why the data of the sheaf on the empty set must be terminal

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