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TmobiusX
  • Member for 13 years, 10 months
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16 votes
4 answers
3k views

Is there a simple method to test a local ring to be Cohen Macaulay?

12 votes
3 answers
3k views

A remark on Cohen's theorem

12 votes
2 answers
1k views

An elementary lemma of commutative algebra

11 votes
1 answer
965 views

The associated prime ideals of $Ext^i_R(M,N)$

8 votes
5 answers
2k views

Textbooks on SINGULAR and Macaulay 2

8 votes
1 answer
357 views

How to construct a ring with global dimension m and weak dimension n?

7 votes
1 answer
881 views

Is there a non-Gorenstein ring but locally Gorenstein?

6 votes
1 answer
226 views

Injective dimension of cyclic modules

5 votes
1 answer
488 views

A problem on finiteness of Ext

5 votes
2 answers
2k views

Is a valuation domain PID when its maximal ideal is principal?

4 votes
1 answer
639 views

An application of Zorn's lemma.

4 votes
1 answer
479 views

Selforthogonal modules over Artinian Gorenstein rings

3 votes
1 answer
201 views

Do the classes of cotorsion and strongly cotorsion modules coincide?

2 votes
1 answer
491 views

A question arising from the Krull intersection theorem.

1 vote
2 answers
283 views

Decomposition of a quotient module

1 vote
0 answers
34 views

Projectivity of a faithfully balanced self-orthogonal bimodule

1 vote
0 answers
194 views

Seek for good methods of computing the Krull dimension of a module?

0 votes
0 answers
164 views

Support sets along a ring homomorphism.

-3 votes
1 answer
1k views

An elementary question about the Krull dimension of modules [closed]