Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interacting Spinor and Scalar Fields in Bianchi type-I Universe filled
  with Perfect Fluid: Exact Self-consistent Solutions   Self-consistent solutions to interacting spinor and scalar field equations in
General Relativity are studied for the case of Bianchi type-I space-time filled
with perfect fluid. The initial and the asymptotic behavior of the field
functions and the metric one has been thoroughly studied.

36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
14
The categories of this paper are: math-ph