Question

Morphism of schemes such that the image contains every generic point of an irreducible component

score 201 · Answer 1 · 2021-07-21 23:01:31

201

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Morphism of schemes such that the image contains every generic point of an irreducible component

Published on 21 Jul 2021 - 23:01

score 317 · Answer 2 · 2026-04-13 01:31:41

317

Views

Hartshorne Exercise II. 3.3 (c) for locally of finite type?

Published on 13 Apr 2026 - 1:31

score 242 · Answer 3 · 2026-04-12 19:01:19

242

Views

What is $\rho$ in Hartshorne's exercise II.5.15(c) on extensions of coherent sheaves?

Published on 12 Apr 2026 - 19:01

score 226 · Answer 4 · 2026-04-11 02:37:59

226

Views

Zariski space which never occurs as the underlying topological space of a scheme.

Published on 11 Apr 2026 - 2:37

score 178 · Answer 5 · 2026-04-12 11:53:42

178

Views

What property can be checked on local schemes $Y\times_X\operatorname{Spec}(\mathcal O_{X,x})$?

Published on 12 Apr 2026 - 11:53

score 187 · Answer 6 · 2026-04-08 19:52:17

187

Views

How to construct such a scheme?

Published on 08 Apr 2026 - 19:52

score 64 · Answer 7 · 2026-04-13 01:21:42

64

Views

For an affine $k$-scheme of finite type, is the underlying ring a finitely generated $k$-algebra?

Published on 13 Apr 2026 - 1:21

score 151 · Answer 8 · 2026-04-12 20:56:22

151

Views

The textbook of Abelian varieties included Grothendieck’s semi-stable reduction Theorem

Published on 12 Apr 2026 - 20:56

score 234 · Answer 9 · 2026-04-12 07:13:47

234

Views

Formal Definition of closed subscheme

Published on 12 Apr 2026 - 7:13

score 495 · Answer 10 · 2026-04-13 03:24:22

495

Views

Is the quasi-projective scheme morphism separated and finite type?

Published on 13 Apr 2026 - 3:24

score 357 · Answer 11 · 2026-04-12 19:33:08

357

Views

Chevalley's Theorem: a step in the proof from Vakil's FOAG

Published on 12 Apr 2026 - 19:33

score 118 · Answer 12 · 2026-03-28 04:35:44

118

Views

Understanding the morphism of schemes involving nilpotents induced by: $\mathbb C[x] \to \mathbb C[x]/(x^2)$ where $x \mapsto ax \pmod {x^2}$

Published on 28 Mar 2026 - 4:35

score 116 · Answer 13 · 2026-04-13 02:20:07

116

Views

Factorization of a morphism of varieties over an open dense subset extends over entire variety

Published on 13 Apr 2026 - 2:20

score 203 · Answer 14 · 2026-04-12 21:19:18

203

Views

extend rational map of varieties which becomes a morphism after base change

Published on 12 Apr 2026 - 21:19

score 147 · Answer 15 · 2026-04-12 10:14:11

147

Views

The coordinate axes are not regularly imbedded in $\mathbb{A}_k^3$

Published on 12 Apr 2026 - 10:14

List Question

Morphism of schemes such that the image contains every generic point of an irreducible component

Hartshorne Exercise II. 3.3 (c) for locally of finite type?

What is $\rho$ in Hartshorne's exercise II.5.15(c) on extensions of coherent sheaves?

Zariski space which never occurs as the underlying topological space of a scheme.

What property can be checked on local schemes $Y\times_X\operatorname{Spec}(\mathcal O_{X,x})$?

How to construct such a scheme?

For an affine $k$-scheme of finite type, is the underlying ring a finitely generated $k$-algebra?

The textbook of Abelian varieties included Grothendieck’s semi-stable reduction Theorem

Formal Definition of closed subscheme

Is the quasi-projective scheme morphism separated and finite type?

Chevalley's Theorem: a step in the proof from Vakil's FOAG

Understanding the morphism of schemes involving nilpotents induced by: $\mathbb C[x] \to \mathbb C[x]/(x^2)$ where $x \mapsto ax \pmod {x^2}$

Factorization of a morphism of varieties over an open dense subset extends over entire variety

extend rational map of varieties which becomes a morphism after base change

The coordinate axes are not regularly imbedded in $\mathbb{A}_k^3$

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