User Ehsan M. Kermani

79 votes

9 answers

14k views

What is the significance of non-commutative geometry in mathematics?

asked Feb 11, 2012 at 7:58

29 votes

2 answers

5k views

Regular, Gorenstein and Cohen-Macaulay

asked Jun 18, 2011 at 14:07

9 votes

2 answers

796 views

Recovering an abelian category out of its derived category

asked Feb 13, 2013 at 20:17

7 votes

2 answers

1k views

Explicit way to construct simple complex tori/abelian varieties of dimension at least 2

asked Dec 18, 2011 at 5:14

6 votes

3 answers

1k views

fundamental group of the complement of lines in C^2

asked Jun 20, 2011 at 11:14

4 votes

2 answers

3k views

Intrinsic vs. Extrinsic [closed]

asked Feb 1, 2012 at 3:55

2 votes

0 answers

434 views

Is the universal closed subscheme reduced?

asked Mar 7, 2013 at 4:47

2 votes

1 answer

1k views

Cancellation theorem for direct and other kinds of products between groups

asked Dec 14, 2011 at 5:34

1 vote

1 answer

991 views

Description of a birational map, Fulton's "Introduction to toric varieties"

asked Nov 6, 2011 at 7:27

1 vote

1 answer

683 views

homogeneous polynomials with suitable number of variables that has a non-trivial solution

asked Mar 17, 2011 at 6:03

1 vote

1 answer

515 views

Cohen Macaulay, free and finitely generated module

asked Jun 13, 2011 at 14:43

1 vote

0 answers

263 views

Surface homeomorphic to an open disc with two congruent curves homoemorphic to a circle

asked Dec 23, 2011 at 0:22

0 votes

1 answer

1k views

No non-trivial homomorphism to a group

asked Dec 20, 2011 at 1:10

-1 votes

1 answer

263 views

Is $X$ homeomorphic to $S^1 \times Y$? [closed]

asked Mar 16, 2011 at 14:49

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14 Questions

What is the significance of non-commutative geometry in mathematics?

Regular, Gorenstein and Cohen-Macaulay

Recovering an abelian category out of its derived category

Explicit way to construct simple complex tori/abelian varieties of dimension at least 2

fundamental group of the complement of lines in C^2

Intrinsic vs. Extrinsic [closed]

Is the universal closed subscheme reduced?

Cancellation theorem for direct and other kinds of products between groups

Description of a birational map, Fulton's "Introduction to toric varieties"

homogeneous polynomials with suitable number of variables that has a non-trivial solution

Cohen Macaulay, free and finitely generated module

Surface homeomorphic to an open disc with two congruent curves homoemorphic to a circle

No non-trivial homomorphism to a group

Is $X$ homeomorphic to $S^1 \times Y$? [closed]