Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The interior $C^2$ estimate for prescribed Gauss curvature equation in
  dimension two   In this paper, we introduce a new auxiliary function, and establish the
interior $C^2$ estimate for prescribed Gauss curvature equation in dimension
two.

10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph