Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Discrete Cocompact subgroups of G_53 and related C*-algebras   The discrete cocompact subgroups of the 5-dimensional Lie group G_53 are
determined up to isomorphism. Each of their group C*-algebras is studied by
determining all of its simple infinite dimensional quotient C*-algebras. The
K-groups and trace invariants of the latter are also obtained.

16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ