Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the generalized nonlinear Camassa-Holm equation   In this paper, a generalized nonlinear Camassa-Holm equation with time- and
space-dependent coefficients is considered. We show that the control of the
higher order dispersive term is possible by using an adequate weight function
to define the energy. The existence and uniqueness of solutions are obtained
via a Picard iterative method.

37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex