Question

Closed immersion of locally ringed spaces vs closed immersion determined by ideal sheaf

score 59 · Answer 1 · 2026-02-23 07:00:21

59

Views

Closed immersion of locally ringed spaces vs closed immersion determined by ideal sheaf

Published on 23 Feb 2026 - 7:00

score 202 · Answer 2 · 2024-01-16 02:49:18

202

Views

When is the localization of finitely generated $k$-algebra finitely generated?

Published on 16 Jan 2024 - 2:49

score 127 · Answer 3 · 2026-03-26 21:27:28

127

Views

Definition of being smooth of relative dimension in Vakil

Published on 26 Mar 2026 - 21:27

score 79 · Answer 4 · 2024-01-20 09:38:32

79

Views

Prove that the preimage of an affine scheme is affine for an affine map of schemes

Published on 20 Jan 2024 - 9:38

score 73 · Answer 5 · 2024-01-21 16:05:36

73

Views

Nilradical ideal sheaf on Noetherian scheme

Published on 21 Jan 2024 - 16:05

score 110 · Answer 6 · 2026-03-26 21:35:36

110

Views

Question related to Etale morphism

Published on 26 Mar 2026 - 21:35

score 73 · Answer 7 · 2026-03-26 01:14:53

73

Views

Algebraic Torus is a group scheme

Published on 26 Mar 2026 - 1:14

score 65 · Answer 8 · 2026-04-02 01:04:50

65

Views

Checking surjectivity at stalk level in closed immersions

Published on 02 Apr 2026 - 1:04

score 87 · Answer 9 · 2026-03-27 06:15:12

87

Views

GL$_n$ schemes representation

Published on 27 Mar 2026 - 6:15

score 108 · Answer 10 · 2026-03-26 21:35:15

108

Views

Proof criticize: rank $n$ vector bundle on $\mathbb{A}^1_k$ is trivial

Published on 26 Mar 2026 - 21:35

score 101 · Answer 11 · 2026-03-26 03:08:20

101

Views

If $U\cong\operatorname{Spec} B\subset \operatorname{Spec} A$ is an affine open, then $\widetilde{M}(U)\cong M\otimes_A B$

Published on 26 Mar 2026 - 3:08

score 41 · Answer 12 · 2024-01-29 17:49:51

41

Views

Gortz-Wedhorn proof of rigidity lemma - unclear step.

Published on 29 Jan 2024 - 17:49

score 38 · Answer 13 · 2024-01-30 19:02:59

38

Views

Locally ringed space is reduced if and only if all stalks are reduced

Published on 30 Jan 2024 - 19:02

score 28 · Answer 14 · 2026-02-23 08:24:25

28

Views

Extension of a distinguished base in Vakil's notes

Published on 23 Feb 2026 - 8:24

score 122 · Answer 15 · 2026-03-26 06:21:22

122

Views

Is there a non-coherent subsheaf of $\mathscr{O}(-1)$ on $\mathbb{P}^1$

Published on 26 Mar 2026 - 6:21

List Question

Closed immersion of locally ringed spaces vs closed immersion determined by ideal sheaf

When is the localization of finitely generated $k$-algebra finitely generated?

Definition of being smooth of relative dimension in Vakil

Prove that the preimage of an affine scheme is affine for an affine map of schemes

Nilradical ideal sheaf on Noetherian scheme

Question related to Etale morphism

Algebraic Torus is a group scheme

Checking surjectivity at stalk level in closed immersions

GL$_n$ schemes representation

Proof criticize: rank $n$ vector bundle on $\mathbb{A}^1_k$ is trivial

If $U\cong\operatorname{Spec} B\subset \operatorname{Spec} A$ is an affine open, then $\widetilde{M}(U)\cong M\otimes_A B$

Gortz-Wedhorn proof of rigidity lemma - unclear step.

Locally ringed space is reduced if and only if all stalks are reduced

Extension of a distinguished base in Vakil's notes

Is there a non-coherent subsheaf of $\mathscr{O}(-1)$ on $\mathbb{P}^1$

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