User Allen Knutson - MathOverflow

Allen Knutson

Member for 14 years, 6 months
Last seen more than a week ago

front.math.ucdavis.edu/…
Cornell

81 Questions

Score Activity Newest Views

5 votes

1 answer

286 views

Edge graph of the polytope of a Bruhat interval

asked Feb 9, 2013 at 13:00

5 votes

2 answers

569 views

Poisson ideals vs. ideals generated by Poisson central elements

asked Jul 29, 2014 at 0:17

5 votes

2 answers

303 views

Weight multiplicity formulae for $(\mathfrak g,B)$-irreps

asked Oct 3, 2014 at 20:07

5 votes

1 answer

262 views

Is the upper boundary of a Schubert variety Cartier?

asked Mar 19, 2015 at 14:14

5 votes

1 answer

304 views

Coefficients of Ehrhart polynomials, in the binomial-coefficient basis

asked Nov 18, 2015 at 11:55

5 votes

1 answer

374 views

When does a dominant map generically admit a section?

asked Feb 5, 2014 at 16:51

5 votes

2 answers

379 views

A general theory of multiplicity-free actions of $G\times H$?

asked Jan 25, 2011 at 3:11

4 votes

0 answers

241 views

Analogy between canonical basis of U(n_-) and Schur functors, each under restriction

asked Sep 4, 2010 at 3:31

4 votes

0 answers

312 views

Combining Lefschetz numbers with Euler classes

asked Aug 22, 2011 at 6:19

4 votes

1 answer

451 views

Disconnectedness of Hilbert schemes of projective schemes

asked Nov 29, 2012 at 16:00

4 votes

0 answers

141 views

Name for facet of a cone containing all but one edge

asked Dec 31, 2018 at 11:39

3 votes

1 answer

204 views

Liftability of a submodule from an associated graded module

asked Aug 27, 2012 at 18:44

3 votes

0 answers

202 views

Projective schemes with a fixed hyperplane section

asked Dec 18, 2013 at 7:37

3 votes

3 answers

339 views

Slice-category-like terminology question

asked Nov 15, 2013 at 18:53

3 votes

1 answer

215 views

Simple reference for valuative criterion of integrality?

asked Oct 20, 2011 at 20:15

3 votes

1 answer

271 views

Reference for: the Bruhat-minimal permutations not less than a fixed permutation pi?

asked Oct 11, 2010 at 2:51

2 votes

1 answer

274 views

What is the family derived from the absolute Frobenius on the Hilbert scheme?

asked Jun 17, 2010 at 15:59

2 votes

1 answer

173 views

Chains in $K\backslash G/B$ lying over a closed $K$-orbit

asked Mar 21, 2012 at 23:16

2 votes

0 answers

200 views

Schemes defined by a collection of Plücker coordinates

asked Aug 23, 2013 at 19:26

2 votes

1 answer

251 views

Irreducibility of holomorphic symplectic quotients

asked Jan 16, 2017 at 20:22

1 vote

0 answers

297 views

When does a group action on $X$ preserve the reduction $X_\text{red}$? [duplicate]

asked Aug 2, 2011 at 16:57

3