Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Cosmological Spacetime Structure and Symmetry: Manifold as a Lie
  Group, Spinor Structure and Symmetry Group, Minkowski Metric, and
  Unnecessariness of Double-Valued Representations   It is shown that cosmological spacetime manifold has the structure of a Lie
group and a spinor space. This leads naturally to the Minkowski metric on
tangent spaces and the Lorentzian metric on the manifold and makes it possible
to dispense with double-valued representations.

34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th