Question

Clarification of a proof that the union of affine schemes is affine

score 215 · Answer 1 · 2026-03-25 22:05:31

215

Views

Clarification of a proof that the union of affine schemes is affine

Published on 25 Mar 2026 - 22:05

score 54 · Answer 2 · 2026-03-25 23:42:15

54

Views

Does the equality of map of stalks imply the equality of the map of global sections?

Published on 25 Mar 2026 - 23:42

score 57 · Answer 3 · 2026-03-25 22:04:31

57

Views

For affine schemes, is the value of the function at a prime same as the germ at that point?

Published on 25 Mar 2026 - 22:04

score 127 · Answer 4 · 2026-03-26 01:12:48

127

Views

How to prove $1$ is in a sum of two ideals related to two disjoint closed subsets of an affine scheme

Published on 26 Mar 2026 - 1:12

score 62 · Answer 5 · 2026-03-26 01:06:08

62

Views

Question about closed subsets of affine schemes

Published on 26 Mar 2026 - 1:06

score 45 · Answer 6 · 2026-03-25 22:03:58

45

Views

Why are pure ideals determined by their vanishing loci?

Published on 25 Mar 2026 - 22:03

score 225 · Answer 7 · 2026-05-11 03:17:09

225

Views

Is the preimage of the generic point of the map $\mathbb{P}^n_R \to \operatorname{Spec}R$ open?

Published on 11 May 2026 - 3:17

score 694 · Answer 8 · 2026-03-25 23:42:28

694

Views

Couple facts about fibers of a morphism of schemes

Published on 25 Mar 2026 - 23:42

score 151 · Answer 9 · 2026-03-25 22:02:43

151

Views

Analyzing the affine scheme Spec $K[x]_{(x)}$

Published on 25 Mar 2026 - 22:02

score 203 · Answer 10 · 2026-05-11 08:33:47

203

Views

Question about Theorem 1 Chapter II.8 from Mumford's red book

Published on 11 May 2026 - 8:33

score 81 · Answer 11 · 2026-03-25 22:06:03

81

Views

Question about points in the $0$ dimensional closed subset of $\operatorname{Spec}R[X_1, ..., X_n]$.

Published on 25 Mar 2026 - 22:06

score 182 · Answer 12 · 2026-03-25 22:04:26

182

Views

On a usage of generic freeness lemma (Vakil's FOAG)

Published on 25 Mar 2026 - 22:04

score 77 · Answer 13 · 2026-03-26 01:02:07

77

Views

Looking at evaluating polynomials at a point via schemes

Published on 26 Mar 2026 - 1:02

score 69 · Answer 14 · 2026-03-25 22:05:05

69

Views

Ideal of the set-theoretic difference of two closed subsets of an affine scheme

Published on 25 Mar 2026 - 22:05

score 150 · Answer 15 · 2026-03-25 22:04:08

150

Views

If $X=\text{Spec}(A)$ where $A$ is a domain, then $\mathcal{O}_X(U)=\bigcap_{p\in U}A_p$

Published on 25 Mar 2026 - 22:04

List Question

Clarification of a proof that the union of affine schemes is affine

Does the equality of map of stalks imply the equality of the map of global sections?

For affine schemes, is the value of the function at a prime same as the germ at that point?

How to prove $1$ is in a sum of two ideals related to two disjoint closed subsets of an affine scheme

Question about closed subsets of affine schemes

Why are pure ideals determined by their vanishing loci?

Is the preimage of the generic point of the map $\mathbb{P}^n_R \to \operatorname{Spec}R$ open?

Couple facts about fibers of a morphism of schemes

Analyzing the affine scheme Spec $K[x]_{(x)}$

Question about Theorem 1 Chapter II.8 from Mumford's red book

Question about points in the $0$ dimensional closed subset of $\operatorname{Spec}R[X_1, ..., X_n]$.

On a usage of generic freeness lemma (Vakil's FOAG)

Looking at evaluating polynomials at a point via schemes

Ideal of the set-theoretic difference of two closed subsets of an affine scheme

If $X=\text{Spec}(A)$ where $A$ is a domain, then $\mathcal{O}_X(U)=\bigcap_{p\in U}A_p$

Trending Questions

Popular # Hahtags

Popular Questions