Question

About the notion of Deligne-Mumford stack

score 48 · Answer 1 · 2026-03-29 08:39:56

48

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About the notion of Deligne-Mumford stack

Published on 29 Mar 2026 - 8:39

score 198 · Answer 2 · 2019-10-20 09:03:00

198

Views

Definition of a surjective morphism of schemes

Published on 20 Oct 2019 - 9:03

score 293 · Answer 3 · 2019-10-20 18:46:39

293

Views

Trying to understand Example 3.3.1 Chapter II Hartshorne

Published on 20 Oct 2019 - 18:46

score 167 · Answer 4 · 2019-10-24 09:44:49

167

Views

Exercise II 3.22 Hartshrone: would like a clarification of the statement

Published on 24 Oct 2019 - 9:44

score 115 · Answer 5 · 2019-10-25 09:04:54

115

Views

On the proof of Corollary II 4.3.2 Hartshorne regarding separated morphism

Published on 25 Oct 2019 - 9:04

score 307 · Answer 6 · 2026-03-27 12:04:01

307

Views

Fibered surface has connected fibers

Published on 27 Mar 2026 - 12:04

score 59 · Answer 7 · 2019-10-26 11:00:19

59

Views

minor question about the definition of fibred products of schemes

Published on 26 Oct 2019 - 11:00

score 109 · Answer 8 · 2026-03-29 08:44:39

109

Views

Section of an invertible sheaf as a morphism between sheaves

Published on 29 Mar 2026 - 8:44

score 510 · Answer 9 · 2026-03-25 17:41:54

510

Views

Question about the statement of Chapter II Ex 2.7 in Hartshorne about $Spec K \to X$ beng equivalent to the inclusion $k(x) \to K$

Published on 25 Mar 2026 - 17:41

score 503 · Answer 10 · 2026-03-30 14:55:08

503

Views

Constant morphism from $\mathbb{P}^m_k$ to $\mathbb{P}^n_k$ as schemes

Published on 30 Mar 2026 - 14:55

score 419 · Answer 11 · 2019-10-29 23:24:51

419

Views

Hartshorne II.4.1 proof verification and question

Published on 29 Oct 2019 - 23:24

score 184 · Answer 12 · 2019-10-31 05:56:13

184

Views

Why does this morphism factor through the reduction? (Lemma II.4.4 in Hartshorne)

Published on 31 Oct 2019 - 5:56

score 100 · Answer 13 · 2019-11-01 10:21:37

100

Views

Question about given $f: X \to Y$ a morphism of schemes, factoring it as $X \to \overline{f(X)} \to Y$

Published on 01 Nov 2019 - 10:21

score 438 · Answer 14 · 2026-03-26 04:53:39

438

Views

Lift $k$-valued points $X(k)$ to $X(A)$ of a smooth scheme over Henselian local ring

Published on 26 Mar 2026 - 4:53

score 179 · Answer 15 · 2019-11-03 19:41:31

179

Views

Importance of the structure sheaf of the spectrum

Published on 03 Nov 2019 - 19:41

List Question

About the notion of Deligne-Mumford stack

Definition of a surjective morphism of schemes

Trying to understand Example 3.3.1 Chapter II Hartshorne

Exercise II 3.22 Hartshrone: would like a clarification of the statement

On the proof of Corollary II 4.3.2 Hartshorne regarding separated morphism

Fibered surface has connected fibers

minor question about the definition of fibred products of schemes

Section of an invertible sheaf as a morphism between sheaves

Question about the statement of Chapter II Ex 2.7 in Hartshorne about $Spec K \to X$ beng equivalent to the inclusion $k(x) \to K$

Constant morphism from $\mathbb{P}^m_k$ to $\mathbb{P}^n_k$ as schemes

Hartshorne II.4.1 proof verification and question

Why does this morphism factor through the reduction? (Lemma II.4.4 in Hartshorne)

Question about given $f: X \to Y$ a morphism of schemes, factoring it as $X \to \overline{f(X)} \to Y$

Lift $k$-valued points $X(k)$ to $X(A)$ of a smooth scheme over Henselian local ring

Importance of the structure sheaf of the spectrum

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