Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Riemannian collineations in General Relativity and in Einstein-Cartan
  cosmology   Riemannian vectorial collineations along with current Killing conservation
are shown to lead to tensorial collineations for the energy-stress tensor in
general relativity and in Einstein-Cartan Weyssenhoff fluid cosmology.

19
The categories of this paper are: eess
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol