Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strings and matrix models on genus g Riemann Surfaces   This is a summary of old work on connections between discrete area preserving
diffeomorphisms, reduced SU(N) Yang-Mills, strings, and the quantum Hall effect
on a Riemann surface of genus g. It is submitted to the archives due to the
interest expressed by colleagues who are currently working on matrix models,
and who could not have access to the proceedings in which the article was
published. The text that follows is the version published in 1991.

20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat