List questions from etale-cohomology

39

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Why is there one and only one $f\in X_2(\gamma)$ such that $g_2f=\gamma$ and the image of $f$ is $x_2$?

Published on 16 Apr 2026 - 6:34

82

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Reference request: Étale cohomology of quotient by finite group

Published on 13 Apr 2026 - 22:38

83

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Nearby cycle complex of a scheme over a DVR with finite number of singularities

Published on 14 Apr 2026 - 17:56

33

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Reference request: ramification divisor of simple perverse sheaf

Published on 16 Apr 2026 - 6:31

65

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Etale cohomology of a variety over a number field VS of its $p$-adic completion

Published on 13 Apr 2026 - 13:12

143

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Composition of Gysin and restriction maps on $\ell$-adic cohomology

Published on 07 May 2026 - 3:59

32

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Direct Image and the induced representation.

Published on 11 May 2026 - 4:58

36

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Fixed part of the induced representation

Published on 11 May 2026 - 6:34

133

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Frobenius action on the Picard group

Published on 11 May 2026 - 2:42

96

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Compact generators of $D^b_c(X)$

Published on 26 Mar 2026 - 9:39

103

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Do we ever use etale coherent sheaves?

Published on 16 Apr 2026 - 15:32

50

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Constructibility of étale sheaves in cohomological dimension

Published on 11 Apr 2026 - 17:07

104

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Understanding a lemma in Milne's etale cohomology

Published on 14 Apr 2026 - 5:23

96

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Etale cohomology of $Spec(ₚ^{\text{sep}}((t)))$

Published on 26 Mar 2026 - 7:59

31

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Relations between (the category of étale sheaves over $X$) and (the category of étale sheaves over a model of $X$)

Published on 16 Apr 2026 - 10:13

List Question

Why is there one and only one $f\in X_2(\gamma)$ such that $g_2f=\gamma$ and the image of $f$ is $x_2$?

Reference request: Étale cohomology of quotient by finite group

Nearby cycle complex of a scheme over a DVR with finite number of singularities

Reference request: ramification divisor of simple perverse sheaf

Etale cohomology of a variety over a number field VS of its $p$-adic completion

Composition of Gysin and restriction maps on $\ell$-adic cohomology

Direct Image and the induced representation.

Fixed part of the induced representation

Frobenius action on the Picard group

Compact generators of $D^b_c(X)$

Do we ever use etale coherent sheaves?

Constructibility of étale sheaves in cohomological dimension

Understanding a lemma in Milne's etale cohomology

Etale cohomology of $Spec(ₚ^{\text{sep}}((t)))$

Relations between (the category of étale sheaves over $X$) and (the category of étale sheaves over a model of $X$)

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