Instruct: Identify the main and secondary category of Arxiv papers based on the titles
Query: The Co-Evolution of Total Density Profiles and Central Dark Matter
  Fractions in Simulated Early-Type Galaxies
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
16
The categories of this paper are: stat
2
The categories of this paper are: math
9
The categories of this paper are: nlin