Question

$\mathscr{F}\rightarrow i_(i^\mathscr{F})$ is an isomorphism for $i:V(\mathscr{I})\rightarrow X$

score 111 · Answer 1 · 2021-05-22 12:09:29

111

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$\mathscr{F}\rightarrow i_(i^\mathscr{F})$ is an isomorphism for $i:V(\mathscr{I})\rightarrow X$

Published on 22 May 2021 - 12:09

score 214 · Answer 2 · 2026-04-12 15:14:15

214

Views

Why is the structure sheaf on an affine scheme defined the way it is, and why is there a difference in the literature?

Published on 12 Apr 2026 - 15:14

score 564 · Answer 3 · 2026-04-11 17:31:42

564

Views

Ideal sheaf of a point in $\mathbb{P}^1$

Published on 11 Apr 2026 - 17:31

score 62 · Answer 4 · 2026-04-10 09:31:56

62

Views

About the definition of Schemes

Published on 10 Apr 2026 - 9:31

score 128 · Answer 5 · 2026-03-26 04:32:41

128

Views

Criterium for the representability of a functor

Published on 26 Mar 2026 - 4:32

score 38 · Answer 6 · 2026-03-26 23:10:50

38

Views

Resolving a coherent sheaf $\mathcal F$ over $\mathbb P^n_S$ via sheafs of the form $\oplus^p\mathcal O_{\mathbb P^n_S}(n)$, where $S$ is Noeth., aff.

Published on 26 Mar 2026 - 23:10

score 98 · Answer 7 · 2021-06-05 23:38:46

98

Views

Morphism to Projective Space in Qing Liu

Published on 05 Jun 2021 - 23:38

score 910 · Answer 8 · 2026-03-28 11:53:43

910

Views

Exercise 1.24 from Joe Harris' Algebraic Geometry: First Course

Published on 28 Mar 2026 - 11:53

score 645 · Answer 9 · 2026-04-12 07:31:39

645

Views

Tangent bundle on a smooth scheme

Published on 12 Apr 2026 - 7:31

score 47 · Answer 10 · 2026-04-09 05:58:19

47

Views

How to get such a scheme?

Published on 09 Apr 2026 - 5:58

score 156 · Answer 11 · 2026-03-27 14:02:26

156

Views

Hartshorne Exercise 2.15/Proposition 2.6: Proving injectivity of functor

Published on 27 Mar 2026 - 14:02

score 184 · Answer 12 · 2026-03-26 12:46:11

184

Views

Steiner Construction of Rational Normal Curve

Published on 26 Mar 2026 - 12:46

score 48 · Answer 13 · 2026-04-08 01:27:04

48

Views

Are all embeddings of varieties essentially the same?

Published on 08 Apr 2026 - 1:27

score 284 · Answer 14 · 2026-04-12 22:47:08

284

Views

When does a fibration has the geometrically integral generic fiber?

Published on 12 Apr 2026 - 22:47

score 220 · Answer 15 · 2026-04-12 17:16:14

220

Views

Definition of $\mathcal O_X$-derivation on scheme $X$ in Vakil

Published on 12 Apr 2026 - 17:16

List Question

$\mathscr{F}\rightarrow i_(i^\mathscr{F})$ is an isomorphism for $i:V(\mathscr{I})\rightarrow X$

Why is the structure sheaf on an affine scheme defined the way it is, and why is there a difference in the literature?

Ideal sheaf of a point in $\mathbb{P}^1$

About the definition of Schemes

Criterium for the representability of a functor

Resolving a coherent sheaf $\mathcal F$ over $\mathbb P^n_S$ via sheafs of the form $\oplus^p\mathcal O_{\mathbb P^n_S}(n)$, where $S$ is Noeth., aff.

Morphism to Projective Space in Qing Liu

Exercise 1.24 from Joe Harris' Algebraic Geometry: First Course

Tangent bundle on a smooth scheme

How to get such a scheme?

Hartshorne Exercise 2.15/Proposition 2.6: Proving injectivity of functor

Steiner Construction of Rational Normal Curve

Are all embeddings of varieties essentially the same?

When does a fibration has the geometrically integral generic fiber?

Definition of $\mathcal O_X$-derivation on scheme $X$ in Vakil

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