Question

Canonical Isomorphism before Category Theory

score 120 · Answer 1 · 2026-04-17 03:35:07

120

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Canonical Isomorphism before Category Theory

Published on 17 Apr 2026 - 3:35

score 1.5k · Answer 2 · 2026-05-10 17:16:55

1.5k

Views

Why does the sheaf cohomology of the constant sheaf on $\mathbb{R}$ vanish?

Published on 10 May 2026 - 17:16

score 519 · Answer 3 · 2026-04-14 17:11:52

519

Views

Canonical Divisor of Product of Smooth Curves is Ample

Published on 14 Apr 2026 - 17:11

score 439 · Answer 4 · 2026-05-10 15:52:45

439

Views

Functor from the category of varieties to the category of schemes.

Published on 10 May 2026 - 15:52

score 750 · Answer 5 · 2026-04-17 00:35:41

750

Views

Pullback morphism of structure sheaves induced by a morphism of schemes

Published on 17 Apr 2026 - 0:35

score 436 · Answer 6 · 2026-05-02 07:32:51

436

Views

Blow up of $\mathbb{P}^2$ in a point and direct image sheaves

Published on 02 May 2026 - 7:32

score 205 · Answer 7 · 2026-05-10 17:17:31

205

Views

The definition of the cohomology of an Abelian sheaf

Published on 10 May 2026 - 17:17

score 846 · Answer 8 · 2026-04-14 16:20:40

846

Views

Surjective homomorphism from the pullback of the pushforward of a quasi-coherent sheaf to itself

Published on 14 Apr 2026 - 16:20

score 412 · Answer 9 · 2026-05-10 16:19:27

412

Views

Do any authors take the sheaf-theoretic viewpoint on multivalued functions and/or indefinite integrals?

Published on 10 May 2026 - 16:19

score 214 · Answer 10 · 2026-04-13 13:00:57

214

Views

Theorem on Formal Function Hartshorne

Published on 13 Apr 2026 - 13:00

score 430 · Answer 11 · 2026-04-11 21:34:16

430

Views

Pullback of Globally Generated Invertible Sheaf

Published on 11 Apr 2026 - 21:34

score 137 · Answer 12 · 2026-04-10 01:20:37

137

Views

Theorem of Formal Functions Hartshorne

Published on 10 Apr 2026 - 1:20

score 62 · Answer 13 · 2026-04-17 06:10:09

62

Views

Comparing cohomologies of $\mathcal{O}_X$ and $\mathcal{O}_{X_\text{red}}$

Published on 17 Apr 2026 - 6:10

score 306 · Answer 14 · 2026-04-15 00:21:43

306

Views

Exact sequence of sheaves in Serre's "Faisceaux algebriques coherents"

Published on 15 Apr 2026 - 0:21

score 148 · Answer 15 · 2026-04-14 05:34:01

148

Views

What does it mean that a prime number "$l$" is invertible in a scheme X?

Published on 14 Apr 2026 - 5:34

List Question

Canonical Isomorphism before Category Theory

Why does the sheaf cohomology of the constant sheaf on $\mathbb{R}$ vanish?

Canonical Divisor of Product of Smooth Curves is Ample

Functor from the category of varieties to the category of schemes.

Pullback morphism of structure sheaves induced by a morphism of schemes

Blow up of $\mathbb{P}^2$ in a point and direct image sheaves

The definition of the cohomology of an Abelian sheaf

Surjective homomorphism from the pullback of the pushforward of a quasi-coherent sheaf to itself

Do any authors take the sheaf-theoretic viewpoint on multivalued functions and/or indefinite integrals?

Theorem on Formal Function Hartshorne

Pullback of Globally Generated Invertible Sheaf

Theorem of Formal Functions Hartshorne

Comparing cohomologies of $\mathcal{O}_X$ and $\mathcal{O}_{X_\text{red}}$

Exact sequence of sheaves in Serre's "Faisceaux algebriques coherents"

What does it mean that a prime number "$l$" is invertible in a scheme X?

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