Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lie point symmetries and conservation laws for a class of BBM-KdV
  systems   We determine the Lie point symmetries of a class of BBM-KdV systems and
establish its nonlinear self-adjointness. We then construct conservation laws
via Ibragimov's Theorem.

36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat