Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the periodic Schr\"odinger-Boussinesq System   We study the local and global well-posedness of the periodic boundary value
problem for the nonlinear Schr\"odinger-Boussinesq system. The existence of
periodic pulses as well as the stability of such solutions are also considered.

20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci