User Hailong Dao

2 votes

Locally square implies square

answered Sep 6, 2010 at 20:44

2 votes

Sum of radical ideals

answered Dec 30, 2009 at 16:02

2 votes

Class groups of normal domains over finite fields

answered Jan 16, 2010 at 23:13

2 votes

Projective dimension of a sub-ideal

answered Feb 28, 2021 at 21:29

2 votes

Accepted

Euler characteristic and rational Poincaré series

answered Feb 15, 2021 at 22:38

2 votes

Accepted

Intersecting a ideal generated in degree $\leq a$ with one generated in degree $\leq b$ in a polynomial ring

answered Aug 30, 2021 at 21:43

2 votes

Why is $M$ torsion-free?

answered Sep 16, 2021 at 17:23

2 votes

Accepted

Lci local rings with isolated singularity are irreducible?

answered Feb 9, 2021 at 17:32

2 votes

Almost clean module

answered Jun 13, 2011 at 14:48

2 votes

Accepted

Presentation of finite modules with null annihilator

answered Jun 27, 2011 at 20:07

2 votes

Quotient of flat module is flat - a property in Mumford's Red book

answered Oct 7, 2011 at 13:56

2 votes

0-1 matrix corresponding to an abstract simplicial complex

answered Apr 26, 2018 at 21:42

1 vote

Accepted

On locally 3-syzygy sheaves

answered Dec 25, 2020 at 2:33

1 vote

Accepted

On a condition on ideals viwed as a Zariski open condition on co-tangent space

answered Jun 13, 2020 at 0:49

1 vote

On the map $\Phi_M: M\otimes_RM^\xrightarrow{x\otimes y\mapsto \left\{f\mapsto f(x)y\right\}}\text{Hom}_R(M^,M^*) $

answered Oct 2, 2021 at 3:05

1 vote

F-splitting and F-purity from commutative algebra viewpoint

answered Apr 6, 2021 at 14:11

1 vote

Accepted

Indecomposable modules such that the radical is a submodule of the socle

answered Mar 14, 2021 at 21:57

1 vote

When does a faithful module have an element with zero annihilator?

answered Feb 28, 2021 at 20:51

1 vote

Trace map attached to a finite homomorphism of noetherian rings

answered Dec 3, 2009 at 15:06

1 vote

Necessary and sufficient criteria for non-trivial derivations to exist?

answered Jun 4, 2010 at 20:15

1 vote

Can we characterise affine open subschemes of ${\rm Spec}(A)$?

answered Sep 28, 2010 at 15:46

1 vote

Comparing homomorphisms over different base rings

answered Oct 22, 2010 at 19:46

1 vote

Tame ramification of (mild) curve singularities.

answered Oct 24, 2010 at 19:14

1 vote

Prime avoidance in adjacent degrees

answered Feb 11, 2011 at 7:10

1 vote

Webpages for specialized communities

answered Feb 11, 2011 at 14:12

1 vote

Accepted

Freeness of modules along ring homomorphisms

answered Mar 23, 2011 at 17:50

0 votes

Annihilator of an element in a ring

answered Mar 11, 2021 at 7:06

0 votes

on the relative conductor of curve singularity and quotient of ideals

answered Feb 23, 2021 at 17:58

0 votes

Torsion pairs and projective dimension

answered Oct 2, 2013 at 11:02

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269 Answers

Locally square implies square

Sum of radical ideals

Class groups of normal domains over finite fields

Projective dimension of a sub-ideal

Euler characteristic and rational Poincaré series

Intersecting a ideal generated in degree $\leq a$ with one generated in degree $\leq b$ in a polynomial ring

Why is $M$ torsion-free?

Lci local rings with isolated singularity are irreducible?

Almost clean module

Presentation of finite modules with null annihilator

Quotient of flat module is flat - a property in Mumford's Red book

0-1 matrix corresponding to an abstract simplicial complex

On locally 3-syzygy sheaves

On a condition on ideals viwed as a Zariski open condition on co-tangent space

On the map $\Phi_M: M\otimes_RM^\xrightarrow{x\otimes y\mapsto \left\{f\mapsto f(x)y\right\}}\text{Hom}_R(M^,M^*) $

F-splitting and F-purity from commutative algebra viewpoint

Indecomposable modules such that the radical is a submodule of the socle

When does a faithful module have an element with zero annihilator?

Trace map attached to a finite homomorphism of noetherian rings

Necessary and sufficient criteria for non-trivial derivations to exist?

Can we characterise affine open subschemes of ${\rm Spec}(A)$?

Comparing homomorphisms over different base rings

Tame ramification of (mild) curve singularities.

Prime avoidance in adjacent degrees

Webpages for specialized communities

Freeness of modules along ring homomorphisms

Annihilator of an element in a ring

on the relative conductor of curve singularity and quotient of ideals

Torsion pairs and projective dimension