Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on proper affine vector fields in special non static axially
  symmetric Lorentzian manifolds   A study of proper affine vector fields in non static axially symmetric
space-times is given by using holonomy and decomposability, the rank of the 6X6
Riemann matrix and direct integration techniques. It is shown that the special
class of the above space-times admits proper affine vector fields.

35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
18
The categories of this paper are: econ
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin