Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cantori and dynamical localization in the Bunimovich Stadium   Classical and quantum properties of the Bunimovich stadium in the diffusive
regime are reviewed. In particular, the quantum properties are directly
investigated using an approximate quantum map. Different localized regimes are
found, namely, perturbative, quasi-integrable (due to classical Cantori),
dynamical and ergodic.

2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg