User Hailong Dao

10 votes

1 answer

287 views

Freiman inequality for projective space?

asked Nov 4, 2019 at 18:29

10 votes

0 answers

369 views

A formula for Frobenius number of certain numerical semigroups

asked Feb 8, 2018 at 19:32

10 votes

1 answer

785 views

How to find examples of non-trival kernel of maps between Brauer groups Br(R) -> Br(K)

asked Feb 11, 2010 at 2:03

10 votes

1 answer

595 views

Condition for existence of certain lattice points on polytopes

asked Jan 27, 2010 at 3:48

10 votes

1 answer

615 views

Do we know the Chow groups of spheres?

asked Oct 25, 2010 at 15:57

10 votes

1 answer

677 views

A recent talk by Kollar on cohomology of structure sheaves

asked Jun 8, 2010 at 23:16

9 votes

0 answers

263 views

Is $[JK:(x)][JK:(y,z)]\subseteq JK$ in $k[x,y,z]$?

asked Feb 5, 2019 at 15:45

8 votes

1 answer

618 views

When is a triangulation of sphere two-colorable?

asked Jun 23, 2021 at 22:46

8 votes

1 answer

285 views

Degrees of syzygies of points in $\mathbb P^2$

asked May 20, 2020 at 14:57

8 votes

4 answers

4k views

How to teach introductory statistic course to students with little math background?

asked Mar 10, 2010 at 18:08

7 votes

1 answer

515 views

Polymath type websites for specialized areas

asked Nov 22, 2018 at 18:28

7 votes

1 answer

312 views

Set of points covered by subspaces of small dimensions

asked Mar 31, 2023 at 22:15

7 votes

1 answer

1k views

How to construct log-canonical (or Calabi-Yau), non-Cohen-Macaulay singularities of low codimensions?

asked Jul 4, 2011 at 2:13

6 votes

1 answer

164 views

Is $[Im:(x)][Im:(y,z)]\subseteq Im$ in $k[x,y,z]$?

asked Jan 15, 2019 at 16:10

6 votes

1 answer

1k views

Seeking examples or proof: injectivity of Cartan homomorphism for commutative rings?

asked Jun 10, 2010 at 23:06

6 votes

0 answers

882 views

Riemann-Roch and Grothendieck duality: general case of Fulton's example 18.3.19

asked Aug 18, 2010 at 1:53

6 votes

0 answers

238 views

Moduli space of modules with fixed length

asked Sep 9, 2010 at 1:47

5 votes

1 answer

392 views

Criterion for acyclicity of flag complexes

asked Nov 19, 2018 at 1:53

5 votes

1 answer

637 views

Upper bounds on number of vertices of graphs whose complements has no induced cycles of certain lengths

asked May 23, 2011 at 20:55

4 votes

1 answer

498 views

Are Abelian varieties (sometimes) globally $F$-split?

asked Jun 6, 2014 at 16:37

4 votes

0 answers

156 views

Inequalities about tripling and doubling sumsets

asked Dec 8, 2018 at 13:32

4 votes

0 answers

179 views

Global dimensions of orders over non-Gorenstein centers

asked Jul 24, 2010 at 6:23

4 votes

1 answer

988 views

Torsion line bundles with non-vanishing cohomology on smooth ACM surfaces

asked Dec 5, 2009 at 22:39

3 votes

1 answer

463 views

Decomposition of modules using computer packages

asked Dec 18, 2009 at 7:34

3 votes

1 answer

568 views

When can one localize Ext?

asked Dec 2, 2009 at 7:33

3 votes

0 answers

325 views

Obstructions for reduced embedded deformation of Artinian rings

asked Apr 16, 2010 at 21:53

3 votes

1 answer

293 views

Freeness of modules along ring homomorphisms

asked Mar 9, 2011 at 13:27

3 votes

2 answers

208 views

Generalizing Pythagorean Theorem: equations defining edges of a (convex) $n$-gon with $n-2$ prescribed angles?

asked Mar 26, 2021 at 19:37

2 votes

1 answer

429 views

Writing integers as determinants of matrices with prime entries.

asked Dec 23, 2017 at 16:23

1 vote

0 answers

169 views

Partial ordering of vector bundles on projective spaces

asked Sep 30, 2010 at 17:55

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62 Questions

Freiman inequality for projective space?

A formula for Frobenius number of certain numerical semigroups

How to find examples of non-trival kernel of maps between Brauer groups Br(R) -> Br(K)

Condition for existence of certain lattice points on polytopes

Do we know the Chow groups of spheres?

A recent talk by Kollar on cohomology of structure sheaves

Is $[JK:(x)][JK:(y,z)]\subseteq JK$ in $k[x,y,z]$?

When is a triangulation of sphere two-colorable?

Degrees of syzygies of points in $\mathbb P^2$

How to teach introductory statistic course to students with little math background?

Polymath type websites for specialized areas

Set of points covered by subspaces of small dimensions

How to construct log-canonical (or Calabi-Yau), non-Cohen-Macaulay singularities of low codimensions?

Is $[Im:(x)][Im:(y,z)]\subseteq Im$ in $k[x,y,z]$?

Seeking examples or proof: injectivity of Cartan homomorphism for commutative rings?

Riemann-Roch and Grothendieck duality: general case of Fulton's example 18.3.19

Moduli space of modules with fixed length

Criterion for acyclicity of flag complexes

Upper bounds on number of vertices of graphs whose complements has no induced cycles of certain lengths

Are Abelian varieties (sometimes) globally $F$-split?

Inequalities about tripling and doubling sumsets

Global dimensions of orders over non-Gorenstein centers

Torsion line bundles with non-vanishing cohomology on smooth ACM surfaces

Decomposition of modules using computer packages

When can one localize Ext?

Obstructions for reduced embedded deformation of Artinian rings

Freeness of modules along ring homomorphisms

Generalizing Pythagorean Theorem: equations defining edges of a (convex) $n$-gon with $n-2$ prescribed angles?

Writing integers as determinants of matrices with prime entries.

Partial ordering of vector bundles on projective spaces