Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Smooth vectors and Weyl-Pedersen calculus for representations of
  nilpotent Lie groups   We present some recent results on smooth vectors for unitary irreducible
representations of nilpotent Lie groups. Applications to the Weyl-Pedersen
calculus of pseudo-differential operators with symbols on the coadjoint orbits
are also discussed.

27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th