List questions from sheaf-cohomology

Published on 19 Apr 2021 - 10:43

126

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Zariski cohomology of an etale sheaf vs etale cohomology.

Published on 27 Mar 2026 - 9:48

256

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fppf/ etale Cohomology calculate with Cech cohomology

Published on 25 Mar 2026 - 14:26

50

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Help proving locally constant presheaf is constant

Published on 27 Mar 2026 - 20:54

148

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Simplicity of kernel of the evaluation map of stable sheaves

Published on 06 May 2021 - 18:45

87

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Riemann-Roch to compute $h^0(F)$ where $F$ is a general fiber on a rational elliptic surface

Published on 27 Mar 2026 - 3:59

199

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Computing cohomology over a presheaf

Published on 27 Mar 2026 - 21:05

974

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Meaning of $\mathcal{O}_X$ and line bundle notation

Published on 18 May 2021 - 16:59

93

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Relationship among $BG, K(G,1)$ and Čech cohomology

Published on 26 Mar 2026 - 7:38

201

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Cech Spectral Sequence for Cohomology with Compact Support

Published on 27 Mar 2026 - 0:02

115

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Derived Equivalence for Topological spaces

Published on 29 May 2021 - 16:39

99

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Reference request: sheaf cohomology after Bott & Tu

Published on 01 Jun 2021 - 3:09

83

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Description of the higher direct image with proper supports

Published on 02 Jun 2021 - 9:41

106

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the sheaf of discontinuous sections over a paracompact Hausdorff space is acyclic with respect to Cech cohomology

Published on 03 Jun 2021 - 13:44

49

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If $F(r+p)$ is gen. by gl. sect. & $H^0(P^n,F(r))\otimes H^0(P^n,O_{P^n}(p))\rightarrow H^0(P^n,F(r+p))$ is surj, why is $F(r+p)$ gen. by gl. sect.?

Published on 03 Jun 2021 - 18:26

List Question

Relation between first sheaf cohomology of scheme X and the global section of sheaf on diagonal.

Zariski cohomology of an etale sheaf vs etale cohomology.

fppf/ etale Cohomology calculate with Cech cohomology

Help proving locally constant presheaf is constant

Simplicity of kernel of the evaluation map of stable sheaves

Riemann-Roch to compute $h^0(F)$ where $F$ is a general fiber on a rational elliptic surface

Computing cohomology over a presheaf

Meaning of $\mathcal{O}_X$ and line bundle notation

Relationship among $BG, K(G,1)$ and Čech cohomology

Cech Spectral Sequence for Cohomology with Compact Support

Derived Equivalence for Topological spaces

Reference request: sheaf cohomology after Bott & Tu

Description of the higher direct image with proper supports

the sheaf of discontinuous sections over a paracompact Hausdorff space is acyclic with respect to Cech cohomology

If $F(r+p)$ is gen. by gl. sect. & $H^0(P^n,F(r))\otimes H^0(P^n,O_{P^n}(p))\rightarrow H^0(P^n,F(r+p))$ is surj, why is $F(r+p)$ gen. by gl. sect.?

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