Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Infinite square well and periodic trajectories in classical mechanics   We examine the classical problem of an infinite square well by considering
Hamilton's equations in one dimension and Hamilton-Jacobi equation for motion
in two dimensions. We illustrate, by means of suitable examples, the nature of
the periodic motion of a particle trapped inside the well.

11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th