Question

How to define a morphism from the Spec of the completion of $O_{Y,y}$ to $Y$?

score 71 · Answer 1 · 2026-03-25 12:28:17

71

Views

How to define a morphism from the Spec of the completion of $O_{Y,y}$ to $Y$?

Published on 25 Mar 2026 - 12:28

score 113 · Answer 2 · 2016-07-18 10:52:58

113

Views

An open subset of a scheme X.

Published on 18 Jul 2016 - 10:52

score 528 · Answer 3 · 2016-07-23 22:12:58

528

Views

Geometric differences between $\operatorname{Spec}\mathbb{C}[x]/(x^2-x)$ and $\operatorname{Spec}\mathbb{C}[x]/(x^3-x^2)$

Published on 23 Jul 2016 - 22:12

score 314 · Answer 4 · 2016-08-02 10:51:34

314

Views

Proof and intuition for a generalization of primitive element theorem?

Published on 02 Aug 2016 - 10:51

score 332 · Answer 5 · 2016-08-20 00:30:24

332

Views

How can I find a presentation for the diagonal of a morphism of affine schemes?

Published on 20 Aug 2016 - 0:30

score 298 · Answer 6 · 2016-08-27 13:36:45

298

Views

Size of fibers versus degrees of residue fields in a morphism of affine schemes

Published on 27 Aug 2016 - 13:36

score 74 · Answer 7 · 2016-09-01 05:27:41

74

Views

Affine scheme of matrices with distinct eigenvalues.

Published on 01 Sep 2016 - 5:27

score 454 · Answer 8 · 2026-03-25 19:01:17

454

Views

Rational Maps from Scheme to Projective Space

Published on 25 Mar 2026 - 19:01

score 303 · Answer 9 · 2016-09-11 09:14:10

303

Views

Affine Scheme of the form $X=Spec(R)$ for $R$ commutative ring, as the analogue of an affine variety $X$ with coordinate ring $R$

Published on 11 Sep 2016 - 9:14

score 508 · Answer 10 · 2016-09-25 22:48:50

508

Views

Finding a distinguished open set in the intersection of two $\operatorname{Spec}$s

Published on 25 Sep 2016 - 22:48

score 150 · Answer 11 · 2026-03-25 12:17:52

150

Views

Proving $\operatorname{Spec} k[x]$ is internally a ring of fractions in the internal language of the Zariski topos

Published on 25 Mar 2026 - 12:17

score 105 · Answer 12 · 2016-09-30 17:11:54

105

Views

Is there a mistake in a Proposition (EGA I, Chap-I, (9.1.2) about affine morphism?

Published on 30 Sep 2016 - 17:11

score 428 · Answer 13 · 2016-09-30 20:08:24

428

Views

Affine if reduction is affine

Published on 30 Sep 2016 - 20:08

score 187 · Answer 14 · 2016-10-11 22:25:18

187

Views

Affine scheme over a field; Can we give generic point coordinates?

Published on 11 Oct 2016 - 22:25

score 801 · Answer 15 · 2016-10-21 22:01:52

801

Views

Why does the punctured affine line deserve its name?

Published on 21 Oct 2016 - 22:01

List Question

How to define a morphism from the Spec of the completion of $O_{Y,y}$ to $Y$?

An open subset of a scheme X.

Geometric differences between $\operatorname{Spec}\mathbb{C}[x]/(x^2-x)$ and $\operatorname{Spec}\mathbb{C}[x]/(x^3-x^2)$

Proof and intuition for a generalization of primitive element theorem?

How can I find a presentation for the diagonal of a morphism of affine schemes?

Size of fibers versus degrees of residue fields in a morphism of affine schemes

Affine scheme of matrices with distinct eigenvalues.

Rational Maps from Scheme to Projective Space

Affine Scheme of the form $X=Spec(R)$ for $R$ commutative ring, as the analogue of an affine variety $X$ with coordinate ring $R$

Finding a distinguished open set in the intersection of two $\operatorname{Spec}$s

Proving $\operatorname{Spec} k[x]$ is internally a ring of fractions in the internal language of the Zariski topos

Is there a mistake in a Proposition (EGA I, Chap-I, (9.1.2) about affine morphism?

Affine if reduction is affine

Affine scheme over a field; Can we give generic point coordinates?

Why does the punctured affine line deserve its name?

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