Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Open KdV hierarchy and minimal gravity on disk   We show that the minimal gravity of Lee-Yang series on disk is a solution to
the open KdV hierarchy proposed for the intersection theory on the moduli space
of Riemann surfaces with boundary.

22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat