Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Simple curves on surfaces   We show that the number of simple closed geodesics of length bounded by L on
a hyperbolic surface of genus g with c cusps and b boundary components grows
roughly like L^{6g+2b+2c-6}. This has been conjectured for some time.

34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess