Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: q-Narayana numbers and the flag h-vector of $J({\bf 2} \times {\bf n})$   The Narayana numbers are $N(n,k) = {1 \over n}{n \choose k}{n \choose
{k+1}}$. There are several natural statistics on Dyck paths with a distribution
given by N(n,k). We show the equidistribution of Narayana statistics by
computing the flag h-vector of $J({\bf 2} \times {\bf n})$ in different ways.
In the process we discover new Narayana statistics and provide co-statistics
for which the Narayana statistics in question have a distribution given by
F\"urlinger and Hofbauers q-Narayana numbers. We also interpret the h-vector in
terms of semi-standard Young tableaux, which enables us to express the
q-Narayana numbers in terms of Schur functions.

5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga