Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Free Variables and the Two Matrix Model   We study the full set of planar Green's functions for a two-matrix model
using the language of functions of non-commuting variables. Both the standard
Schwinger-Dyson equations and equations determining connected Green's functions
can be efficiently discussed and solved. This solution determines the master
field for the model in the `$C$-representation.'

23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph