Question

Layman's Question on Schemes

score 134 · Answer 1 · 2014-10-21 02:48:50

134

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Layman's Question on Schemes

Published on 21 Oct 2014 - 2:48

score 118 · Answer 2 · 2026-03-25 06:04:39

118

Views

Confused about short exact sequence involving $\mathcal{O}_{\mathbb{P}^n}$ and $\mathcal{O}_Z$ for $\pi:Z\rightarrow \mathbb{P}^n$ closed embedding

Published on 25 Mar 2026 - 6:04

score 153 · Answer 3 · 2014-10-23 11:12:09

153

Views

Is Spec ($k[x_1,x_2,\ldots])$ a smooth $k$-scheme?

Published on 23 Oct 2014 - 11:12

score 1.2k · Answer 4 · 2014-10-24 14:28:29

1.2k

Views

A particular example of a non-reduced scheme (with a reduced ring of global sections)?

Published on 24 Oct 2014 - 14:28

score 454 · Answer 5 · 2014-10-25 06:17:02

454

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When the fibers of a flat morphism are varieties.

Published on 25 Oct 2014 - 6:17

score 2.9k · Answer 6 · 2014-11-02 01:33:37

2.9k

Views

Questions about tangent and cotangent bundle on schemes

Published on 02 Nov 2014 - 1:33

score 93 · Answer 7 · 2026-03-25 07:49:04

93

Views

Point at infinity of the scheme $\mathbb{P}^1$

Published on 25 Mar 2026 - 7:49

score 480 · Answer 8 · 2026-03-25 16:07:07

480

Views

integral ring homomorphism

Published on 25 Mar 2026 - 16:07

score 1.8k · Answer 9 · 2014-11-06 15:19:08

1.8k

Views

Hartshorne's Exercise II. 2.15 (fully faithful functor)

Published on 06 Nov 2014 - 15:19

score 238 · Answer 10 · 2026-03-25 22:26:37

238

Views

The Theorem on Formal Funtions - Harthshorne Theorem 11.1

Published on 25 Mar 2026 - 22:26

score 297 · Answer 11 · 2014-11-20 01:02:26

297

Views

Simple questions about morphisms of finite type and proper morphisms

Published on 20 Nov 2014 - 1:02

score 161 · Answer 12 · 2014-11-23 01:39:12

161

Views

Question about composition of morphisms of schemes (Mumford's)

Published on 23 Nov 2014 - 1:39

score 254 · Answer 13 · 2014-11-24 02:57:01

254

Views

Some questions about Qing Liu's proof of Valuative Criterion of Properness

Published on 24 Nov 2014 - 2:57

score 437 · Answer 14 · 2026-03-25 09:28:28

437

Views

What is the canonical morphism of $\mathbb{P}^n_A$ to $\text{Spec }A$?

Published on 25 Mar 2026 - 9:28

score 145 · Answer 15 · 2014-11-25 18:59:28

145

Views

Alternative proof of Noether Normalization Lemma

Published on 25 Nov 2014 - 18:59

List Question

Layman's Question on Schemes

Confused about short exact sequence involving $\mathcal{O}_{\mathbb{P}^n}$ and $\mathcal{O}_Z$ for $\pi:Z\rightarrow \mathbb{P}^n$ closed embedding

Is Spec ($k[x_1,x_2,\ldots])$ a smooth $k$-scheme?

A particular example of a non-reduced scheme (with a reduced ring of global sections)?

When the fibers of a flat morphism are varieties.

Questions about tangent and cotangent bundle on schemes

Point at infinity of the scheme $\mathbb{P}^1$

integral ring homomorphism

Hartshorne's Exercise II. 2.15 (fully faithful functor)

The Theorem on Formal Funtions - Harthshorne Theorem 11.1

Simple questions about morphisms of finite type and proper morphisms

Question about composition of morphisms of schemes (Mumford's)

Some questions about Qing Liu's proof of Valuative Criterion of Properness

What is the canonical morphism of $\mathbb{P}^n_A$ to $\text{Spec }A$?

Alternative proof of Noether Normalization Lemma

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