Impact
~21k
people reached
- 0 posts edited
- 0 helpful flags
- 67 votes cast
Jan
11 |
answered | Ring with Cohen-Macaulay canonical module |
Dec
29 |
answered | Maximal Cohen-Macaulay modules of type one |
Dec
11 |
comment |
The finiteness of the associated primes of $Ext^i_R(R/I, M)$
the local condition is not important in this question. you can change $\mathbb{Z}[X]$ by $\mathbb{Q}[X,Y,Z]_{(X,Y,Z)}$ and the prime ideals $\{(p,X): p \text{ is prime}\}$ by $\{(X, Y+nZ) : n = 0, 1, ...\}$. |
Dec
11 |
answered | The finiteness of the associated primes of $Ext^i_R(R/I, M)$ |
Sep
18 |
awarded | Yearling |
Sep
7 |
awarded | Nice Question |
Sep
4 |
comment |
Graded-irreducible ideals are irreducible?
Thank you Fred, I have a quick look their proof. They used the fact $I$ is irreducible iff the index of reducible of $I$ is one. So their proof need Noetheian condition. My proof is also true for $\mathbb{Z}$-graded (I fell it works for $\mathbb{N}^n$-graded also). |
Sep
1 |
revised |
Is an irreducible ideal in $R$ also irreducible in $R[x]$?
added 105 characters in body |
Sep
1 |
revised |
Is an irreducible ideal in $R$ also irreducible in $R[x]$?
added 180 characters in body |
Sep
1 |
answered | Graded-irreducible ideals are irreducible? |
Aug
31 |
awarded | Custodian |
Aug
31 |
reviewed | Approve Is an irreducible ideal in $R$ also irreducible in $R[x]$? |
Aug
31 |
comment |
Is an irreducible ideal in $R$ also irreducible in $R[x]$?
I edited my answer more detail (add a Fact). |
Aug
31 |
revised |
Is an irreducible ideal in $R$ also irreducible in $R[x]$?
added 695 characters in body |
Aug
28 |
revised |
Is an irreducible ideal in $R$ also irreducible in $R[x]$?
added 9 characters in body |
Aug
28 |
answered | Is an irreducible ideal in $R$ also irreducible in $R[x]$? |
Jan
20 |
comment |
Ring of differential operators of a quotient ring
Maybe the question is true when $R = k[x_1, ..., x_n]$ a polynomial ring. Anh it is enough to understand the rings of diffirential operators of finite $k$-algebra. |
Dec
30 |
revised |
On the computational complexity of the Hilbert polynomial of numerical semigroup rings
added 4 characters in body |
Dec
30 |
asked | On the computational complexity of the Hilbert polynomial of numerical semigroup rings |
Dec
9 |
revised |
Minimal length of quotient by parameter ideals
added 618 characters in body |