1,232 reputation
415
bio website
location Hanoi
age 31
visits member for 3 years, 3 months
seen 1 hour ago

I am interested in commutative algebra, especially, local cohomology and characteristic $p$ method.


Dec
11
comment Errata for Atiyah-Macdonald
I can not solve the exercise 2(iii), Chapter 1 of A-M. Please help!
Dec
9
revised Minimal length of quotient by parameter ideals
added 618 characters in body
Dec
9
answered Minimal length of quotient by parameter ideals
Sep
18
awarded  Yearling
Sep
9
awarded  Promoter
Sep
6
asked Dimension of totally reflexive modules
Jul
2
awarded  Curious
May
20
accepted Colon operation after adjoint variables
May
20
revised Colon operation after adjoint variables
added 805 characters in body
May
15
answered Colon operation after adjoint variables
May
15
comment Colon operation after adjoint variables
Thanks you, Neil!
May
14
asked Colon operation after adjoint variables
Mar
1
awarded  Self-Learner
Feb
28
comment Dimension of a ring after localization
Example $u = 1 + X$ and $v = 1 + X^2$ we have $u - v = X - X^2 = X(1 -X)$ is unit in $T_S$ since both $X$ and $1-X$ are units in $T_S$.
Feb
28
revised Dimension of a ring after localization
added 42 characters in body
Feb
28
comment Dimension of a ring after localization
Thanks you Mahdi! I accepted your answer.
Feb
28
accepted Dimension of a ring after localization
Feb
28
answered Dimension of a ring after localization
Feb
28
comment Dimension of a ring after localization
Dear Fred, I do not have that paper. Could you please sent it for me. I think I can prove it.
Feb
27
comment Dimension of a ring after localization
I only known Countable Prime Avoidance Lemma for complete local ring before. Thanks you very much for the new form. But the ring in my question do not have this assumption.