List questions from sheaf-theory

158

Views

de Rham complex as a smooth space, and the relationship between pullback of forms and pullback of sheaves

Published on 29 Mar 2026 - 10:37

4.5k

Views

What does it exactly mean if a morphism of sheaves is surjective?

Published on 16 Oct 2016 - 3:17

175

Views

Characterization of covering families in terms of joint epimorphy of images

Published on 25 Mar 2026 - 12:17

376

Views

Is the sheaf of meromorphic functions flasque?

Published on 28 Mar 2026 - 16:13

437

Views

A version of the Riemann existence theorem

Published on 28 Mar 2026 - 18:02

5.2k

Views

Why tensor product of two sheaves of modules is a sheaf of modules?

Published on 18 Oct 2016 - 19:21

460

Views

Are sheaves (co)algebras for a (co)monad?

Published on 29 Mar 2026 - 10:37

507

Views

Equivalence of sheaves and various categories of bundles

Published on 30 Mar 2026 - 8:33

120

Views

$\mathcal{O}_X/\mathfrak{m}_p$ and $\mathfrak{m}_p/\mathfrak{m}_p^2$ - quotients by ideals of points in $\mathbb{P}^2$

Published on 25 Mar 2026 - 16:02

1.6k

Views

example of a presheaf

Published on 23 Oct 2016 - 17:41

2.6k

Views

Why is the ideal sheaf $\mathcal{I}_Y$ equal to $\mathcal{O}(-Y)$ and not $\mathcal{O}(Y)$?

Published on 27 Oct 2016 - 14:01

1.2k

Views

Understanding the pullback of a sheaf of differentials

Published on 27 Oct 2016 - 17:11

168

Views

Checking exactness of etale sheaves

Published on 26 Mar 2026 - 4:50

451

Views

Sheaf cohomology on projective space

Published on 26 Mar 2026 - 14:19

656

Views

What is the canonical meromorphic section $1_D$ of $\mathcal O_X(D)$?

Published on 25 Mar 2026 - 13:57

List Question

de Rham complex as a smooth space, and the relationship between pullback of forms and pullback of sheaves

What does it exactly mean if a morphism of sheaves is surjective?

Characterization of covering families in terms of joint epimorphy of images

Is the sheaf of meromorphic functions flasque?

A version of the Riemann existence theorem

Why tensor product of two sheaves of modules is a sheaf of modules?

Are sheaves (co)algebras for a (co)monad?

Equivalence of sheaves and various categories of bundles

$\mathcal{O}_X/\mathfrak{m}_p$ and $\mathfrak{m}_p/\mathfrak{m}_p^2$ - quotients by ideals of points in $\mathbb{P}^2$

example of a presheaf

Why is the ideal sheaf $\mathcal{I}_Y$ equal to $\mathcal{O}(-Y)$ and not $\mathcal{O}(Y)$?

Understanding the pullback of a sheaf of differentials

Checking exactness of etale sheaves

Sheaf cohomology on projective space

What is the canonical meromorphic section $1_D$ of $\mathcal O_X(D)$?

Trending Questions

Popular # Hahtags

Popular Questions