List questions from sheaf-theory

Published on 28 Mar 2026 - 1:48

61

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Going between sheaves and slices

Published on 28 Apr 2017 - 8:45

372

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Why is the inverse image functor on sheaves defined the way it is?

Published on 30 Apr 2017 - 13:01

118

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Wikipedia's example of constant sheaf

Published on 01 May 2017 - 13:24

85

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Sheaves and isomorphisms with chain complex of singular chains (Sheaf Theory, Bredon)

Published on 28 Mar 2026 - 1:48

282

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When the kernel of a quotient of a locally free sheaf is locally free

Published on 28 Mar 2026 - 1:48

2.5k

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Why is the structure sheaf (sheaf of rings) $\mathcal{O}$ on $\mathrm{Spec}\ A$ a sheaf?

Published on 07 May 2017 - 12:22

95

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The set of functions locally extendible form a sheaf

Published on 07 May 2017 - 14:47

67

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$H^0(X,\mathcal{F})=\mathcal{F}(X)$

Published on 28 Mar 2026 - 1:46

348

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Trying to understand an example of the local system

Published on 09 May 2017 - 13:27

277

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Locally ringed spaces and varieties

Published on 26 Mar 2026 - 21:08

201

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Intersecting $\mathbb{Q}$-Cartier divisors on a singular variety (Cone)

Published on 26 Mar 2026 - 13:57

396

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Vakhil 14.2.E why $t \mapsto t, \mathcal{O}_X(D) \to \mathcal{O}_X$ is isomorphism?

Published on 20 May 2017 - 16:16

136

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Invertible sheaf isomorphic to $\mathcal{O}(div (s))$ but $\mathcal{O}(1)$ on $\mathbb{P}^1$ not?

Published on 26 Mar 2026 - 13:51

238

Views

Vakhil 14.2.E how we can glueing local isomorphism to global?

Published on 22 May 2017 - 9:04

List Question

Prove that a covariant functor which satisfies 2 conditions is a cosheaf

Going between sheaves and slices

Why is the inverse image functor on sheaves defined the way it is?

Wikipedia's example of constant sheaf

Sheaves and isomorphisms with chain complex of singular chains (Sheaf Theory, Bredon)

When the kernel of a quotient of a locally free sheaf is locally free

Why is the structure sheaf (sheaf of rings) $\mathcal{O}$ on $\mathrm{Spec}\ A$ a sheaf?

The set of functions locally extendible form a sheaf

$H^0(X,\mathcal{F})=\mathcal{F}(X)$

Trying to understand an example of the local system

Locally ringed spaces and varieties

Intersecting $\mathbb{Q}$-Cartier divisors on a singular variety (Cone)

Vakhil 14.2.E why $t \mapsto t, \mathcal{O}_X(D) \to \mathcal{O}_X$ is isomorphism?

Invertible sheaf isomorphic to $\mathcal{O}(div (s))$ but $\mathcal{O}(1)$ on $\mathbb{P}^1$ not?

Vakhil 14.2.E how we can glueing local isomorphism to global?

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