Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two dimensional QCD and abelian bosonization   A bosonized action, that reproduces the structure of the 't Hooft equation
for $QCD_2$ in the large-$N$ limit, up to regularization dependent terms, is
derived.

9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph