Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Square integrable projective representations and square integrable
  representations modulo a relatively central subgroup (I): basic results   We introduce the notion of square integrable group representation modulo a
relatively central subgroup and, establishing a link with square integrable
projective representations, we prove a generalization of a classical theorem of
Duflo and Moore. As an example, we apply the results obtained to the
Weyl-Heisenberg group.

9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat