User Richard Stanley

15 votes

2 answers

620 views

Maximum dimension of space of matrices with a real eigenvalue

asked Mar 30, 2019 at 18:37

14 votes

0 answers

276 views

A conjectured rational generating function

asked Sep 23, 2022 at 14:04

14 votes

1 answer

641 views

A Schur positivity conjecture related to row and column permutations

asked Nov 16, 2016 at 1:22

14 votes

0 answers

378 views

A hard Lefschetz theorem for nilCoxeter algebras

asked Jan 19, 2017 at 17:06

13 votes

2 answers

879 views

The expected square of the determinant of a random row stochastic matrix

asked Dec 3, 2016 at 1:18

13 votes

1 answer

1k views

Lots of combinatorial interpretations of Catalan numbers

asked Dec 12, 2014 at 18:00

13 votes

1 answer

596 views

A symmetric function related to sums of square roots

asked Oct 12, 2023 at 15:40

13 votes

2 answers

596 views

Number of distinct exponent patterns in the prime power factorizations of the integers 1,2,...,n

asked Apr 21 at 19:39

13 votes

1 answer

253 views

Is $(n!^{-d})_{n\geq 0}$ a Pólya frequency sequence?

asked Aug 29 at 0:40

13 votes

1 answer

536 views

Some questions related to meanders

asked Sep 22 at 1:49

12 votes

2 answers

580 views

Erich Stiemke biography

asked Nov 29, 2017 at 17:36

12 votes

1 answer

755 views

A polynomial recurrence involving partial derivatives

asked Feb 7, 2012 at 15:13

12 votes

0 answers

502 views

A $q$-analogue of Foulkes' character related to alternating permutations

asked Feb 14, 2014 at 22:14

12 votes

1 answer

361 views

An averaging game on finite multisets of integers

asked Oct 2, 2020 at 23:55

12 votes

2 answers

510 views

Positivity of the coefficients of the Ehrhart polynomial of a cross-polytope

asked Feb 8, 2019 at 20:13

12 votes

4 answers

947 views

Conceptual explanation of geometric mean as a limit of power means

asked Jun 9, 2020 at 20:52

11 votes

2 answers

910 views

Access to a preprint by D. N. Verma

asked Feb 28, 2013 at 2:37

11 votes

1 answer

1k views

Number of spanning trees of a quotient graph

asked May 20, 2010 at 2:25

11 votes

1 answer

315 views

Further aspects of a Hankel matrix of involution numbers

asked Feb 8, 2017 at 16:58

11 votes

1 answer

258 views

Counting nonzero hyperdeterminants over $\mathbb{F}_q$

asked Mar 4, 2016 at 23:30

10 votes

1 answer

424 views

Shellable simplicial complex with restriction on shellings

asked Dec 21, 2016 at 21:01

10 votes

0 answers

229 views

Maximum dimension of a space of $n\times n$ real matrices with at least $k$ nonzero eigenvalues

asked Aug 26, 2018 at 2:40

10 votes

0 answers

195 views

Local cohomology and residues of rational functions at 0 and $\infty$

asked May 12, 2023 at 2:48

9 votes

0 answers

409 views

Number of sets $S$ for which number of permutations in $S_n$ with descent set $S$ is odd

asked Apr 5, 2022 at 19:23

9 votes

1 answer

289 views

Partitioning a set of lattice points in the plane into rectangles

asked Aug 18, 2021 at 21:54

9 votes

1 answer

301 views

Nonnegative coefficients of a product of polynomials

asked Dec 23, 2018 at 21:38

9 votes

0 answers

114 views

Smith normal form of conjugacy class actions

asked Jul 1, 2019 at 21:34

9 votes

0 answers

177 views

An $m$-positivity conjecture related to bivariate Jacobi-Trudi matrices

asked Jul 21 at 15:49

8 votes

1 answer

240 views

A recurrence satisfied by a function asymptotic to $n^n$

asked Jul 8 at 14:46

8 votes

0 answers

150 views

Can P-recursive functions assume only prime values?

asked Jul 20 at 16:26

Stack Exchange Network

85 Questions

Maximum dimension of space of matrices with a real eigenvalue

A conjectured rational generating function

A Schur positivity conjecture related to row and column permutations

A hard Lefschetz theorem for nilCoxeter algebras

The expected square of the determinant of a random row stochastic matrix

Lots of combinatorial interpretations of Catalan numbers

A symmetric function related to sums of square roots

Number of distinct exponent patterns in the prime power factorizations of the integers 1,2,...,n

Is $(n!^{-d})_{n\geq 0}$ a Pólya frequency sequence?

Some questions related to meanders

Erich Stiemke biography

A polynomial recurrence involving partial derivatives

A $q$-analogue of Foulkes' character related to alternating permutations

An averaging game on finite multisets of integers

Positivity of the coefficients of the Ehrhart polynomial of a cross-polytope

Conceptual explanation of geometric mean as a limit of power means

Access to a preprint by D. N. Verma

Number of spanning trees of a quotient graph

Further aspects of a Hankel matrix of involution numbers

Counting nonzero hyperdeterminants over $\mathbb{F}_q$

Shellable simplicial complex with restriction on shellings

Maximum dimension of a space of $n\times n$ real matrices with at least $k$ nonzero eigenvalues

Local cohomology and residues of rational functions at 0 and $\infty$

Number of sets $S$ for which number of permutations in $S_n$ with descent set $S$ is odd

Partitioning a set of lattice points in the plane into rectangles

Nonnegative coefficients of a product of polynomials

Smith normal form of conjugacy class actions

An $m$-positivity conjecture related to bivariate Jacobi-Trudi matrices

A recurrence satisfied by a function asymptotic to $n^n$

Can P-recursive functions assume only prime values?