Question

is there a ring homomorphism $f:H^(T^n;R)\to H^(T^n;R)$ of graded rings which is not induced by a continuous map $T^n\to T^n$?

score 188 · Answer 1 · 2016-04-04 13:21:08

188

Views

is there a ring homomorphism $f:H^(T^n;R)\to H^(T^n;R)$ of graded rings which is not induced by a continuous map $T^n\to T^n$?

Published on 04 Apr 2016 - 13:21

score 108 · Answer 2 · 2026-03-26 01:09:18

108

Views

Reflexive Graded Module

Published on 26 Mar 2026 - 1:09

score 47 · Answer 3 · 2016-04-22 03:07:56

47

Views

$G_{\mathfrak a}(A)$ integral domain and $\bigcap \mathfrak a^n = 0$ implies $A$ is integral domain

Published on 22 Apr 2016 - 3:07

score 319 · Answer 4 · 2026-03-26 04:38:04

319

Views

Sum of Hilbert functions of a finite exact sequence of finitely generated graded modules

Published on 26 Mar 2026 - 4:38

score 112 · Answer 5 · 2016-05-17 21:05:54

112

Views

Show that $S_f^{\ge0}=\bigoplus_{d\ge0}(S_f)_d$ is a normal domain, where $S$ is an $\mathbf N$-graded domain, $S_{(f)}$ a normal domain $f\in S_1$

Published on 17 May 2016 - 21:05

score 438 · Answer 6 · 2026-03-26 04:30:22

438

Views

Exact sequence of graded modules and localization

Published on 26 Mar 2026 - 4:30

score 247 · Answer 7 · 2016-05-22 07:50:22

247

Views

Existence of homogeneous non-unit non-zero divisor in a particular graded ring.

Published on 22 May 2016 - 7:50

score 290 · Answer 8 · 2026-03-25 18:56:28

290

Views

Well-definedness of homogeneous coordinate ring of projective scheme

Published on 25 Mar 2026 - 18:56

score 1.4k · Answer 9 · 2016-06-04 15:54:12

1.4k

Views

Infinite direct sum of abelian groups

Published on 04 Jun 2016 - 15:54

score 44 · Answer 10 · 2016-06-04 20:04:08

44

Views

the standard even grading on $M_2(A)$ and $A\otimes \mathbb{K}$

Published on 04 Jun 2016 - 20:04

score 266 · Answer 11 · 2016-06-15 16:08:24

266

Views

On graded Artinian Gorenstein algebras

Published on 15 Jun 2016 - 16:08

score 50 · Answer 12 · 2016-06-20 18:38:32

50

Views

Structure constants in a finitely generated $\mathbb{k}$-algebra

Published on 20 Jun 2016 - 18:38

score 228 · Answer 13 · 2016-06-23 02:33:27

228

Views

A homogeneous principal prime ideal in $K[x_1,\dots,x_n]$ is generated by a homogeneous element.

Published on 23 Jun 2016 - 2:33

score 1.6k · Answer 14 · 2013-05-08 07:51:11

1.6k

Views

Homogeneous ideals are contained in homogeneous prime ideals

Published on 08 May 2013 - 7:51

score 396 · Answer 15 · 2026-03-26 06:09:19

396

Views

Higher Tensor powers of graded vector spaces

Published on 26 Mar 2026 - 6:09

List Question

is there a ring homomorphism $f:H^(T^n;R)\to H^(T^n;R)$ of graded rings which is not induced by a continuous map $T^n\to T^n$?

Reflexive Graded Module

$G_{\mathfrak a}(A)$ integral domain and $\bigcap \mathfrak a^n = 0$ implies $A$ is integral domain

Sum of Hilbert functions of a finite exact sequence of finitely generated graded modules

Show that $S_f^{\ge0}=\bigoplus_{d\ge0}(S_f)_d$ is a normal domain, where $S$ is an $\mathbf N$-graded domain, $S_{(f)}$ a normal domain $f\in S_1$

Exact sequence of graded modules and localization

Existence of homogeneous non-unit non-zero divisor in a particular graded ring.

Well-definedness of homogeneous coordinate ring of projective scheme

Infinite direct sum of abelian groups

the standard even grading on $M_2(A)$ and $A\otimes \mathbb{K}$

On graded Artinian Gorenstein algebras

Structure constants in a finitely generated $\mathbb{k}$-algebra

A homogeneous principal prime ideal in $K[x_1,\dots,x_n]$ is generated by a homogeneous element.

Homogeneous ideals are contained in homogeneous prime ideals

Higher Tensor powers of graded vector spaces

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