Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Operator representations of cross product algebras of Podles' quantum
  spheres   Hilbert space representations of the cross product *-algebra of the Hopf
*-algebra U_q(su_2) and its module *-algebras O(S^2_{qc}) of Podles' spheres
are studied. Two classes of representations are described by explicit formulas
for the actions of the generators.

8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph