Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytical Expression for Low-dimensional Resonance Island in
  4-dimensional Symplectic Map   We study a 2- and a 4-dimensional nearly integrable symplectic maps using a
singular perturbation method. Resonance island structures in the 2- and 4-
dimensional maps are successfully obtained. Those perturbative results are
numerically confirmed.

28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph