Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Predestined Dark Matter in Gauge Extensions of the Standard Model   In any gauge extension of the standard model (SM) of quarks and leptons,
there is a minimal set of fermion and scalar multiplets which encompasses all
the particles and interactions of the SM. Included within this set, there may
be a suitable dark-matter candidate. If not, one may still exist from the
judicious addition of a simple fermion or scalar multiplet without any imposed
symmetry. Some new examples of such predestined dark matter are discussed.

2
The categories of this paper are: math
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ