Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmology and Gravitostatics   In gravitostatics, the minimally generalized Newtonian theory, the simplest
cosmological model implies a cosmological redshift with acceleration parameter
-1. If the gravitational potential satisfies a wave equation, the total mass
density (visible plus dark) is one third of the critical density, in good
agreement with observation. There is no horizon problem and no need to invoke
dark energy.

23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg