Question

Closed immersions are affine morphisms

score 1.1k · Answer 1 · 2026-03-26 03:18:47

1.1k

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Closed immersions are affine morphisms

Published on 26 Mar 2026 - 3:18

score 132 · Answer 2 · 2026-03-25 16:08:25

132

Views

Trying to understand the statement of Nakayama's lemma for coherent modules in Mumford' red book

Published on 25 Mar 2026 - 16:08

score 605 · Answer 3 · 2026-03-25 02:59:43

605

Views

Residue fields at points on $\mathbb{A}^n$

Published on 25 Mar 2026 - 2:59

score 323 · Answer 4 · 2020-06-14 17:47:10

323

Views

About lemma 5.6.2 of Szamuely's "Galois groups and fundamental groups": descending etale morphisms.

Published on 14 Jun 2020 - 17:47

score 92 · Answer 5 · 2020-06-15 12:21:21

92

Views

Question regarding the spectrum of a quasi-coherent $\mathcal{O}_X$-algebra

Published on 15 Jun 2020 - 12:21

score 124 · Answer 6 · 2026-03-25 11:06:43

124

Views

Hilbert polynomial of the blow-up of a projection

Published on 25 Mar 2026 - 11:06

score 291 · Answer 7 · 2026-03-30 03:37:52

291

Views

When does a morphism of varieties preserve codimension of points?

Published on 30 Mar 2026 - 3:37

score 205 · Answer 8 · 2020-06-16 09:27:00

205

Views

About equivalence between geometric vector bundles and locally free $\mathcal{O}_X$-modules of finite rank

Published on 16 Jun 2020 - 9:27

score 525 · Answer 9 · 2026-03-25 16:09:39

525

Views

Why is the dualizing sheaf $\omega_X$ locally free of rank 1 at generic points for a scheme $X$ satisfying $G_0$ and $S_2$?

Published on 25 Mar 2026 - 16:09

score 343 · Answer 10 · 2020-06-18 13:17:03

343

Views

Showing if an étale morphism is finite by looking at the fibers

Published on 18 Jun 2020 - 13:17

score 160 · Answer 11 · 2026-03-26 11:17:59

160

Views

Blow up of $V(x^2 - y^2 + x^3) \subset \operatorname{Spec}k[x,y]$

Published on 26 Mar 2026 - 11:17

score 377 · Answer 12 · 2020-06-21 12:01:51

377

Views

Ramification divisors for normal varieties

Published on 21 Jun 2020 - 12:01

score 159 · Answer 13 · 2020-06-21 20:19:54

159

Views

Properties of Morphism of a scheme which is both reduced and irreducible.

Published on 21 Jun 2020 - 20:19

score 335 · Answer 14 · 2026-03-26 06:19:21

335

Views

constant morphisms from projective, integral schemes over k

Published on 26 Mar 2026 - 6:19

score 102 · Answer 15 · 2026-03-25 09:29:15

102

Views

When is $\operatorname{Proj}k[x,y,z]/(x^n＋y^n＋z^n)$ is a regular scheme?

Published on 25 Mar 2026 - 9:29

List Question

Closed immersions are affine morphisms

Trying to understand the statement of Nakayama's lemma for coherent modules in Mumford' red book

Residue fields at points on $\mathbb{A}^n$

About lemma 5.6.2 of Szamuely's "Galois groups and fundamental groups": descending etale morphisms.

Question regarding the spectrum of a quasi-coherent $\mathcal{O}_X$-algebra

Hilbert polynomial of the blow-up of a projection

When does a morphism of varieties preserve codimension of points?

About equivalence between geometric vector bundles and locally free $\mathcal{O}_X$-modules of finite rank

Why is the dualizing sheaf $\omega_X$ locally free of rank 1 at generic points for a scheme $X$ satisfying $G_0$ and $S_2$?

Showing if an étale morphism is finite by looking at the fibers

Blow up of $V(x^2 - y^2 + x^3) \subset \operatorname{Spec}k[x,y]$

Ramification divisors for normal varieties

Properties of Morphism of a scheme which is both reduced and irreducible.

constant morphisms from projective, integral schemes over k

When is $\operatorname{Proj}k[x,y,z]/(x^n＋y^n＋z^n)$ is a regular scheme?

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