User Graham Leuschke

107 votes

Your favorite surprising connections in mathematics

answered Feb 8, 2010 at 14:37

90 votes

Irreducibility of polynomials in two variables

answered Feb 3, 2010 at 23:51

30 votes

Accepted

How to think about CM rings?

answered Nov 24, 2009 at 19:37

29 votes

What are some mathematical sculptures?

answered Jul 19, 2010 at 13:28

19 votes

Accepted

regularity of local ring

answered Sep 10, 2012 at 10:53

17 votes

Accepted

Example of an infinite abelian but non-cyclic group whose automorphism group is cyclic

answered Sep 1, 2011 at 14:22

16 votes

Accepted

Descent of regularity under a faithfully flat morphism: Where does my proof fail?

answered Jun 6, 2014 at 12:39

14 votes

Accepted

Number of generators of an ideal in a polynomial ring over a Noetherian ring

answered Jan 16, 2012 at 21:50

14 votes

Accepted

Krull Dimension

answered Jul 6, 2010 at 13:43

11 votes

Size of a Groebner basis

answered Aug 5, 2010 at 13:47

11 votes

Some intuition behind the five lemma?

answered Oct 26, 2009 at 22:33

11 votes

What does a projective resolution mean geometrically?

answered Oct 23, 2009 at 19:37

10 votes

Classification of pairs of commuting endomorphisms

answered Aug 29, 2013 at 19:01

9 votes

Accepted

Are there two non-isomorphic modules such that all the Hom-sets are isomorphic?

answered Jul 6, 2012 at 4:23

9 votes

Which journals publish expository work?

answered Feb 20, 2010 at 14:15

8 votes

Accepted

A question on group action on algebras

answered Jun 3, 2010 at 12:47

8 votes

R2 and S3 for rings.

answered Oct 20, 2009 at 12:33

8 votes

When are dual modules free?

answered Nov 10, 2009 at 14:49

8 votes

Accepted

Generalizing miracle flatness (Matsumura 23.1) via finite Tor-dimension

answered Dec 1, 2009 at 14:58

8 votes

Matrix factorizations and physics

answered Dec 25, 2009 at 13:44

8 votes

Accepted

How to check if a commutative ring is Gorenstein.

answered Feb 18, 2013 at 1:22

8 votes

Free Resolution of this determinantal variety.

answered Sep 30, 2012 at 1:35

8 votes

Accepted

State of the art on a question on the existence of dualizing complex

answered Oct 17, 2012 at 12:03

7 votes

Upper bound to the number of generators

answered Nov 19, 2010 at 0:25

7 votes

When does End(M) consist entirely of zero, zero divisors, and units?

answered Mar 11, 2013 at 1:36

7 votes

Tachikawa conjecture for commutative algebras proven?

answered Feb 11, 2017 at 20:41

7 votes

Simple example of a ring which is normal but not CM

answered Oct 21, 2009 at 14:40

7 votes

The finite subgroups of SL(2,C)

answered Feb 22, 2010 at 13:43

6 votes

Have people successfully worked with the full ring of differential operators in characteristic p?

answered Feb 10, 2010 at 21:07

6 votes

Accepted

Regular sequence of elements of degree 1 for a homogeneous Cohen-Macaulay ring

answered Oct 26, 2010 at 10:56

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61 Answers

Your favorite surprising connections in mathematics

Irreducibility of polynomials in two variables

How to think about CM rings?

What are some mathematical sculptures?

regularity of local ring

Example of an infinite abelian but non-cyclic group whose automorphism group is cyclic

Descent of regularity under a faithfully flat morphism: Where does my proof fail?

Number of generators of an ideal in a polynomial ring over a Noetherian ring

Krull Dimension

Size of a Groebner basis

Some intuition behind the five lemma?

What does a projective resolution mean geometrically?

Classification of pairs of commuting endomorphisms

Are there two non-isomorphic modules such that all the Hom-sets are isomorphic?

Which journals publish expository work?

A question on group action on algebras

R2 and S3 for rings.

When are dual modules free?

Generalizing miracle flatness (Matsumura 23.1) via finite Tor-dimension

Matrix factorizations and physics

How to check if a commutative ring is Gorenstein.

Free Resolution of this determinantal variety.

State of the art on a question on the existence of dualizing complex

Upper bound to the number of generators

When does End(M) consist entirely of zero, zero divisors, and units?

Tachikawa conjecture for commutative algebras proven?

Simple example of a ring which is normal but not CM

The finite subgroups of SL(2,C)

Have people successfully worked with the full ring of differential operators in characteristic p?

Regular sequence of elements of degree 1 for a homogeneous Cohen-Macaulay ring