Question

How can I find the scheme representing the graph of the closure of this rational map?

score 385 · Answer 1 · 2026-03-25 12:28:23

385

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How can I find the scheme representing the graph of the closure of this rational map?

Published on 25 Mar 2026 - 12:28

score 464 · Answer 2 · 2026-03-25 11:20:17

464

Views

$\operatorname{Spec}(A)$ is called "the (prime) spectrum of $A$". What is $\operatorname{Proj}(A)$ called?

Published on 25 Mar 2026 - 11:20

score 98 · Answer 3 · 2026-03-26 12:58:24

98

Views

$\mathcal{O}_X(U)=\cap_{x\in U}\mathcal{O}_{X,x}$ in integral schemes

Published on 26 Mar 2026 - 12:58

score 353 · Answer 4 · 2017-02-19 21:53:34

353

Views

When is a graph isomorphic to the source?

Published on 19 Feb 2017 - 21:53

score 627 · Answer 5 · 2026-03-26 02:53:49

627

Views

"Trivial" geometry behind the intersection pairing on surfaces

Published on 26 Mar 2026 - 2:53

score 272 · Answer 6 · 2017-02-25 12:46:29

272

Views

Schemes as closed subschemes in étale schemes

Published on 25 Feb 2017 - 12:46

score 389 · Answer 7 · 2026-03-26 01:16:42

389

Views

Converse to "free module on locally constant sheaf is quasi-coherent"

Published on 26 Mar 2026 - 1:16

score 250 · Answer 8 · 2026-03-25 12:50:06

250

Views

On the theorem of the cube and the semicontinuity theorem: intuition for proof of proposition?

Published on 25 Mar 2026 - 12:50

score 664 · Answer 9 · 2017-03-02 07:46:07

664

Views

Are sections of the structure sheaf of a scheme determined by their values at its closed points?

Published on 02 Mar 2017 - 7:46

score 131 · Answer 10 · 2017-03-02 13:11:39

131

Views

Some Thoughts about Schemes.

Published on 02 Mar 2017 - 13:11

score 479 · Answer 11 · 2026-03-26 01:17:26

479

Views

Taking ideal sheaf which is not locally generated by sections, where does it fail to construct a closed subscheme

Published on 26 Mar 2026 - 1:17

score 71 · Answer 12 · 2026-03-25 04:41:33

71

Views

How can I work out the hopf-algebra action corresponding to a group action on an affine scheme?

Published on 25 Mar 2026 - 4:41

score 1.3k · Answer 13 · 2026-04-02 11:59:07

1.3k

Views

Confusion with the divisor associated to a rational differential form

Published on 02 Apr 2026 - 11:59

score 324 · Answer 14 · 2017-03-12 14:27:59

324

Views

example of a normal proper flat scheme over $\mathbb{Z}$?

Published on 12 Mar 2017 - 14:27

score 3.1k · Answer 15 · 2017-03-12 15:52:21

3.1k

Views

Definition of the special fiber

Published on 12 Mar 2017 - 15:52

List Question

How can I find the scheme representing the graph of the closure of this rational map?

$\operatorname{Spec}(A)$ is called "the (prime) spectrum of $A$". What is $\operatorname{Proj}(A)$ called?

$\mathcal{O}_X(U)=\cap_{x\in U}\mathcal{O}_{X,x}$ in integral schemes

When is a graph isomorphic to the source?

"Trivial" geometry behind the intersection pairing on surfaces

Schemes as closed subschemes in étale schemes

Converse to "free module on locally constant sheaf is quasi-coherent"

On the theorem of the cube and the semicontinuity theorem: intuition for proof of proposition?

Are sections of the structure sheaf of a scheme determined by their values at its closed points?

Some Thoughts about Schemes.

Taking ideal sheaf which is not locally generated by sections, where does it fail to construct a closed subscheme

How can I work out the hopf-algebra action corresponding to a group action on an affine scheme?

Confusion with the divisor associated to a rational differential form

example of a normal proper flat scheme over $\mathbb{Z}$?

Definition of the special fiber

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