Question

Proj of Almost Same Graded Rings are Isomorphic (Exercise from Vakil's FOAG)

score 302 · Answer 1 · 2021-06-25 12:35:02

302

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Proj of Almost Same Graded Rings are Isomorphic (Exercise from Vakil's FOAG)

Published on 25 Jun 2021 - 12:35

score 270 · Answer 2 · 2021-06-26 23:08:08

270

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$k$-rational points of $\mathbb{P}^n_k$

Published on 26 Jun 2021 - 23:08

score 231 · Answer 3 · 2021-06-30 14:42:33

231

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Relative proj base ring, closed immersions via Vakil

Published on 30 Jun 2021 - 14:42

score 323 · Answer 4 · 2021-07-11 03:39:28

323

Views

Proof of Fundamental Theorem of Elimination Theory, from Vakil's FOAG

Published on 11 Jul 2021 - 3:39

score 281 · Answer 5 · 2021-07-18 11:02:38

281

Views

Asymmetric Numeral Systems Arithmetic

Published on 18 Jul 2021 - 11:02

score 493 · Answer 6 · 2021-08-03 13:12:17

493

Views

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

Published on 03 Aug 2021 - 13:12

score 84 · Answer 7 · 2021-08-09 15:36:25

84

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Are there any homogeneous prime ideals of $k[x,y,z]/(xz,yz,z^2)$ not containing $z$?

Published on 09 Aug 2021 - 15:36

score 101 · Answer 8 · 2021-08-15 18:03:48

101

Views

Confusion about a standard rational map $\operatorname{Proj} A[x_0,\dots,x_n] \dashrightarrow \operatorname{Proj} A[x_0,\dots,x_{n-1}]$.

Published on 15 Aug 2021 - 18:03

score 221 · Answer 9 · 2026-03-25 20:36:31

221

Views

Global sections of $\operatorname{Proj} S$ when $S$ is an integrally closed domain

Published on 25 Mar 2026 - 20:36

score 203 · Answer 10 · 2026-03-27 16:47:04

203

Views

Calculating normalization of the projective cusp $V(x^2z-y^3)$

Published on 27 Mar 2026 - 16:47

score 283 · Answer 11 · 2021-09-15 21:16:36

283

Views

How to give equations for $\phi_K(C)$, the canonical curve?

Published on 15 Sep 2021 - 21:16

score 49 · Answer 12 · 2021-09-19 17:50:13

49

Views

If $R_0 \not\cong S_0$ but $\exists n \in \mathbb N$ with $R_d \cong S_d$ for all $d \ge n$, then $\operatorname{Proj}R \cong \operatorname{Proj}S$?

Published on 19 Sep 2021 - 17:50

score 83 · Answer 13 · 2026-03-25 23:37:33

83

Views

Degree of Hilbert polynomial

Published on 25 Mar 2026 - 23:37

score 325 · Answer 14 · 2021-10-24 16:41:57

325

Views

Hartshorne exercise II.4.7(e): Why are there two choices for $X_0$ when part (a) says $X_0$ is unique?

Published on 24 Oct 2021 - 16:41

score 231 · Answer 15 · 2021-10-25 15:09:00

231

Views

Projective morphism is stable under base extension

Published on 25 Oct 2021 - 15:09

List Question

Proj of Almost Same Graded Rings are Isomorphic (Exercise from Vakil's FOAG)

$k$-rational points of $\mathbb{P}^n_k$

Relative proj base ring, closed immersions via Vakil

Proof of Fundamental Theorem of Elimination Theory, from Vakil's FOAG

Asymmetric Numeral Systems Arithmetic

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

Are there any homogeneous prime ideals of $k[x,y,z]/(xz,yz,z^2)$ not containing $z$?

Confusion about a standard rational map $\operatorname{Proj} A[x_0,\dots,x_n] \dashrightarrow \operatorname{Proj} A[x_0,\dots,x_{n-1}]$.

Global sections of $\operatorname{Proj} S$ when $S$ is an integrally closed domain

Calculating normalization of the projective cusp $V(x^2z-y^3)$

How to give equations for $\phi_K(C)$, the canonical curve?

If $R_0 \not\cong S_0$ but $\exists n \in \mathbb N$ with $R_d \cong S_d$ for all $d \ge n$, then $\operatorname{Proj}R \cong \operatorname{Proj}S$?

Degree of Hilbert polynomial

Hartshorne exercise II.4.7(e): Why are there two choices for $X_0$ when part (a) says $X_0$ is unique?

Projective morphism is stable under base extension

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