User Hailong Dao

11 votes

Accepted

irreducibility of generic linear combination of polynomials?

answered Apr 21, 2011 at 19:33

11 votes

Tor sheaves: what do they tell us about geometry

answered Mar 12, 2012 at 15:08

11 votes

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CM for radical ideal

answered Nov 26, 2010 at 15:07

11 votes

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Blowups of Cohen-Macaulay varieties

answered Oct 24, 2010 at 19:01

11 votes

Tor and projective dimension

answered Jul 24, 2010 at 16:58

10 votes

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Primes that must occur in every composition series for a given module

answered Dec 7, 2010 at 7:08

10 votes

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A question about an application of Molien's formula to find the generators and relations of an invariant ring

answered Mar 13, 2011 at 3:09

10 votes

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Unique factorisation and the fact that $\mathbb A^2-0$ is not an affine variety?

answered Mar 6, 2011 at 7:41

10 votes

A geometric reference for (affine) Gorenstein varieties and singularities

answered Mar 6, 2011 at 20:17

10 votes

EGZ theorem (Erdős-Ginzburg-Ziv)

answered Mar 1, 2010 at 1:45

10 votes

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Examples of one-dimensional non-Cohen Macaulay rings

answered Feb 16, 2010 at 20:31

10 votes

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Finite number of minimal ideals

answered Jun 2, 2010 at 23:51

10 votes

Is the support of a flat sheaf flat?

answered Feb 10, 2012 at 23:51

10 votes

Are there more Nullstellensätze?

answered Aug 2, 2011 at 6:19

10 votes

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Can we say anything about the Krull dimension of a localization?

answered Jun 21, 2011 at 14:59

10 votes

Changing field of study post-PhD

answered Jul 12, 2011 at 1:51

10 votes

When is the reduced subscheme of a Cohen-Macaulay scheme also Cohen-Macaulay?

answered Jun 25, 2013 at 15:38

10 votes

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Is an overring of an order reflexive as a module over the order?

answered Nov 1, 2019 at 21:28

9 votes

Commutative algebraic version of algebraic geometric object

answered Nov 23, 2018 at 22:23

9 votes

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faithful modules over a finite dimensional commutative algebra

answered May 29, 2020 at 3:32

9 votes

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cohen-macaulayness of reduced and non-reduced schemes

answered Sep 1, 2013 at 0:46

9 votes

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Depth under localization over a Cohen-Macaulay ring

answered Dec 27, 2017 at 16:52

9 votes

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Some examples of depth

answered Dec 2, 2009 at 6:32

9 votes

Is it true that if the pushforward of a coherent sheaf is locally free, then the original sheaf is locally free?

answered Jun 28, 2010 at 20:06

9 votes

Torsion-freeness of Picard group

answered Jul 21, 2010 at 19:36

9 votes

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Length of I/I^2 versus Ann(I)/Ann(I)^2 in Artinian rings.

answered Aug 23, 2010 at 1:56

8 votes

Basic results with three or more hypotheses

answered Oct 22, 2010 at 9:35

8 votes

Line bundles trivial after extension of the base-field

answered Oct 15, 2010 at 17:27

8 votes

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Isolated hypersurface singularities, Chow groups and D-branes

answered Jan 16, 2010 at 19:56

8 votes

Diameter of simplicial complex mirrored in property of Stanley-Reisner ring?

answered Dec 29, 2017 at 0:30

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269 Answers

irreducibility of generic linear combination of polynomials?

Tor sheaves: what do they tell us about geometry

CM for radical ideal

Blowups of Cohen-Macaulay varieties

Tor and projective dimension

Primes that must occur in every composition series for a given module

A question about an application of Molien's formula to find the generators and relations of an invariant ring

Unique factorisation and the fact that $\mathbb A^2-0$ is not an affine variety?

A geometric reference for (affine) Gorenstein varieties and singularities

EGZ theorem (Erdős-Ginzburg-Ziv)

Examples of one-dimensional non-Cohen Macaulay rings

Finite number of minimal ideals

Is the support of a flat sheaf flat?

Are there more Nullstellensätze?

Can we say anything about the Krull dimension of a localization?

Changing field of study post-PhD

When is the reduced subscheme of a Cohen-Macaulay scheme also Cohen-Macaulay?

Is an overring of an order reflexive as a module over the order?

Commutative algebraic version of algebraic geometric object

faithful modules over a finite dimensional commutative algebra

cohen-macaulayness of reduced and non-reduced schemes

Depth under localization over a Cohen-Macaulay ring

Some examples of depth

Is it true that if the pushforward of a coherent sheaf is locally free, then the original sheaf is locally free?

Torsion-freeness of Picard group

Length of I/I^2 versus Ann(I)/Ann(I)^2 in Artinian rings.

Basic results with three or more hypotheses

Line bundles trivial after extension of the base-field

Isolated hypersurface singularities, Chow groups and D-branes

Diameter of simplicial complex mirrored in property of Stanley-Reisner ring?