Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure of T modules and restricted duals: the classical and the
  quantum case   A concrete realization of Enright's $T$ modules is obtained. This is used to
show their self-duality. As a consequence, the restricted duals of Verma
modules are also identified.

20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat