Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rotational solutions of prescribed period of Hamiltonian systems on
  $\R^{2n-k}\ts T^k$   In this paper, we consider Hamiltonian systems on $\R^{2n-k}\ts T^k$.
Multiple rotational solutions are obtained.

21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg