Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A geometrical demonstration for continuation of solutions of the
  generalised BBM equation   A simple proof that if the generalised BBM equation has a solution vanishing
on an open sent of its domain then the solution is necessarily zero is given.
In particular, the only compactly supported solution of the equation under
consideration is the identically vanishing one.

26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an