Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some Plane Symmetric Inhomogeneous Cosmological Models in the
  Scalar-Tensor Theory of Gravitation   The present study deals with the inhomogeneous plane symmetric models in
scalar - tensor theory of gravitation. We used symmetry group analysis method
to solve the field equations analytically. A new class of similarity solutions
have been obtained by considering the inhomogeneous nature of metric potential.
The physical behavior and geometrical aspects of the derived models are also
discussed.

28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an