Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of the Poincare cross-section method: Visualization the
  three-dimensional sections of four-dimensional flows   The theme of the article is the application of the Poincare section method
for visual classification of attractors in the four-dimensional phase space;
the purpose of the study is to introduce consideration of three-dimensional
Poincare sections, and develop an algorithm for their use for classification of
four-dimensional flows by the type of attractors. The article contains the
obtained in three-dimensional Poincare sections traces of 4D attractors,
allowing you to get an idea of their topology, as well as to conduct their
primary classification. It is important that the model discussed in the article
is formulated as universal, which allows one to study the evolution of systems
(if they can be described iterative equations) consisting of subsystems
interacting along arbitrary laws.

26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg