Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The ergodic theory of hyperbolic groups   These notes are a self-contained introduction to the use of dynamical and
probabilistic methods in the study of hyperbolic groups. Most of this material
is standard; however some of the proofs given are new, and some results are
proved in greater generality than have appeared in the literature. These notes
originated in a minicourse given at a workshop in Melbourne, July 11-15 2011.

20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th