Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Logarithmic asymptotics for the number of periodic orbits of the
  Teichmueller flow on Veech's space of zippered rectangles   The logarithmic asymptotics for the growth of the number of periodic orbits,
such that the norm of the corresponding renormalization matrix does not exceed
a given constant, is computed for the Teichmueller flow on Veech's moduli space
of zippered rectangles. The rate is equal to the entropy of the flow with
respect to the absolutely continuous invariant measure.

15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph