Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Do Gravitational Fields Have Mass? Or on the Nature of Dark Matter   As has been shown before (a brief comment will be given in the text),
relativistic mass and relativistic time dilation of moving bodies are
equivalent as well as time and mass in the rest frame. This implies that the
time dilation due to the gravitational field is combined with inertial and
gravitational mass as well and permits the computation of the gravitational
action of the vacuum constituting the gravitational field in any distance from
the source of the field. Theoretical predictions are compared with experimental
results and it is shown that many known astrophysical and gravitational
phenomena, especially the so-called dark or missing matter, owe their existence
to the gravitational effects of the mass of the field-vacuum.

18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg