Question

$(S_f)_0$ is a finitely generated algebra if $S$ is.

score 77 · Answer 1 · 2026-03-25 11:54:14

77

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$(S_f)_0$ is a finitely generated algebra if $S$ is.

Published on 25 Mar 2026 - 11:54

score 293 · Answer 2 · 2019-02-18 10:14:15

293

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Prove that the set of lines on smooth variety is a variety

Published on 18 Feb 2019 - 10:14

score 698 · Answer 3 · 2026-04-10 07:34:32

698

Views

Question On Intersections of Homogeneous Prime Ideals

Published on 10 Apr 2026 - 7:34

score 91 · Answer 4 · 2019-02-18 17:25:19

Why is it that $ V_{+}(I) \cup V(J) $ = $ V_{+}(I \cap J), $ where $ I $ and $ J $ are homogeneous ideals of a graded ring $ S$?

score 215 · Answer 5 · 2026-04-12 23:59:49

215

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Glueing T-structures

Published on 12 Apr 2026 - 23:59

score 1.1k · Answer 6 · 2026-03-25 06:04:39

1.1k

Views

Blow-up of affine space along subvariety

Published on 25 Mar 2026 - 6:04

score 91 · Answer 7 · 2026-04-10 03:37:08

91

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Projection Formula for Projective Morphisms

Published on 10 Apr 2026 - 3:37

score 58 · Answer 8 · 2019-02-18 23:09:54

58

Views

Functions restricted to $\operatorname{Spec}(k[x,y]/(x^2,xy))$ with $k$ algebraically closed.

Published on 18 Feb 2019 - 23:09

score 114 · Answer 9 · 2026-04-10 19:41:36

114

Views

Definition of Functor in Waterhouse

Published on 10 Apr 2026 - 19:41

score 217 · Answer 10 · 2026-04-12 21:52:09

217

Views

How is it geometrically justified that the tangent space to $y(y-x^2)=0$ is the whole plane?

Published on 12 Apr 2026 - 21:52

score 58 · Answer 11 · 2026-04-12 13:57:26

58

Views

The proof of $\Gamma(X,\mathcal{O}_X)\cong \Gamma(X_{an},\mathcal{O}_{X_{an}})$

Published on 12 Apr 2026 - 13:57

score 62 · Answer 12 · 2026-04-11 20:00:28

62

Views

difference between graded ring and its twisted global sections

Published on 11 Apr 2026 - 20:00

score 271 · Answer 13 · 2026-04-09 00:33:37

271

Views

Understanding the definition of an unramified morphism of schemes

Published on 09 Apr 2026 - 0:33

score 40 · Answer 14 · 2019-02-19 17:21:57

$X,Y$ reduced, irreducible, separated schemes with same function field. $U_i,V_i$ are coverings of $X,Y$ s.t. $O(U_i)\cong O(V_i)$, then $X\cong Y$

score 848 · Answer 15 · 2026-04-12 17:23:57

848

Views

Dimension of global sections

Published on 12 Apr 2026 - 17:23

List Question

$(S_f)_0$ is a finitely generated algebra if $S$ is.

Prove that the set of lines on smooth variety is a variety

Question On Intersections of Homogeneous Prime Ideals

Why is it that $ V_{+}(I) \cup V(J) $ = $ V_{+}(I \cap J), $ where $ I $ and $ J $ are homogeneous ideals of a graded ring $ S$?

Glueing T-structures

Blow-up of affine space along subvariety

Projection Formula for Projective Morphisms

Functions restricted to $\operatorname{Spec}(k[x,y]/(x^2,xy))$ with $k$ algebraically closed.

Definition of Functor in Waterhouse

How is it geometrically justified that the tangent space to $y(y-x^2)=0$ is the whole plane?

The proof of $\Gamma(X,\mathcal{O}_X)\cong \Gamma(X_{an},\mathcal{O}_{X_{an}})$

difference between graded ring and its twisted global sections

Understanding the definition of an unramified morphism of schemes

$X,Y$ reduced, irreducible, separated schemes with same function field. $U_i,V_i$ are coverings of $X,Y$ s.t. $O(U_i)\cong O(V_i)$, then $X\cong Y$

Dimension of global sections

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