Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Global Singularity Theory for the Gauss Curvature Equation   Lecture notes for a minicourse to given in the XVII Brazilian School of
Geometry, UFAM (Amazonas), Brazil, July 2012.

4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th