Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Global existence of solutions of the Nordstr\"om-Vlasov system in two
  space dimensions   The dynamics of a self-gravitating ensemble of collisionless particles is
modeled by the Nordstr\"om-Vlasov system in the framework of the Nordstr\"om
scalar theory of gravitation. For this system in two space dimensions, integral
representations of the first order derivatives of the field are derived. Using
these representations we show global existence of smooth solutions for large
data.

27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
19
The categories of this paper are: eess