Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rough solutions of a Schroedinger - Benjamin - Ono system   The Cauchy problem for a coupled Schroedinger and Benjamin - Ono system is
shown to be globally well-posed for a class of data without finite energy. The
proof uses the I-method introduced by Colliander, Keel, Staffilani, Takaoka,
and Tao.

8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ