Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The generalized Newton's law of gravitation versus the general theory of
  relativity   Einstein general theory of relativity (GTR) accounted well for the precession
of the perihelion of planets and binary pulsars. While the ordinary Newton law
of gravitation failed, a generalized version yields similar results. We have
shown here that these effects can be accounted for as due to the existence of
gravitomagnetism only, and not necessarily due to the curvature of space time.
Or alternatively, gravitomagnetism is equivalent to a curved space-time. The
precession of the perihelion of planets and binary pulsars may be interpreted
as due to the spin of the orbiting planet ($m$) about the Sun ($M$)\,. The spin
($S$) of planets is found to be related to their orbital angular momentum ($L$)
by a simple formula, \emph{viz}., $S\propto \,\frac{m}{M}L$\,.

8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph