Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Smirnov Trees   We introduce a generalization of Smirnov words in the context of labeled
binary trees, which we call Smirnov trees. We study the generating function for
ascent-descent statistics on Smirnov trees and establish that it is
$e$-positive, which is akin to the classical case of Smirnov words. Our proof
relies on an intricate weight-preserving bijection.

7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg