Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Matrix models of 2d gravity   These are introductory lectures for a general audience that give an overview
of the subject of matrix models and their application to random surfaces, 2d
gravity, and string theory. They are intentionally 1.5 years out of date.
  0. Canned Diatribe, Introduction, and Apologies
  1. Discretized surfaces, matrix models, and the continuum limit
  2. All genus partition functions
  3. KdV equations and other models
  4. Quick tour of Liouville theory

16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics