List questions from sheaf-theory

Published on 27 Mar 2026 - 8:33

327

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Constant sheaf with value the empty set

Published on 29 Apr 2021 - 2:00

245

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A question on the subscheme of a $k$-scheme of finite type

Published on 04 May 2021 - 12:14

292

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Questions about algebraic analysis: prerequesites, references and state of the field

Published on 26 Mar 2026 - 9:42

84

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Riemann Surface for single valued functions

Published on 27 Mar 2026 - 17:29

50

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Help proving locally constant presheaf is constant

Published on 27 Mar 2026 - 20:54

149

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Simplicity of kernel of the evaluation map of stable sheaves

Published on 29 Mar 2026 - 3:28

120

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What is the difference between invertible sheaf and sheaf of ring on a ringed space?

Published on 23 Feb 2026 - 14:08

199

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Computing cohomology over a presheaf

Published on 27 Mar 2026 - 21:05

52

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How do I read this term used in a coherent sheave?

Published on 10 May 2021 - 22:08

52

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If P = "Of finite type", then a morphism of schemes $f: X \to Y$ is locally of finite type iff $f$ is locally of type P.

Published on 11 May 2021 - 18:43

31

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Elementary example showing that $(f_*\mathcal{F})_{f(x)} \neq \mathcal{F}_x$

Published on 12 May 2021 - 23:10

110

Views

Vector bundles over curves

Published on 07 Apr 2026 - 9:36

214

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Example where the associated sheaf does not exist

Published on 28 Mar 2026 - 7:35

156

Views

Every object of the topos $Sh(B)$ is projective

Published on 01 Apr 2026 - 16:23

List Question

Sheaf relative to a presheaf

Constant sheaf with value the empty set

A question on the subscheme of a $k$-scheme of finite type

Questions about algebraic analysis: prerequesites, references and state of the field

Riemann Surface for single valued functions

Help proving locally constant presheaf is constant

Simplicity of kernel of the evaluation map of stable sheaves

What is the difference between invertible sheaf and sheaf of ring on a ringed space?

Computing cohomology over a presheaf

How do I read this term used in a coherent sheave?

If P = "Of finite type", then a morphism of schemes $f: X \to Y$ is locally of finite type iff $f$ is locally of type P.

Elementary example showing that $(f_*\mathcal{F})_{f(x)} \neq \mathcal{F}_x$

Vector bundles over curves

Example where the associated sheaf does not exist

Every object of the topos $Sh(B)$ is projective

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