Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on the formal structure of quantum constrained systems   The space of the solutions of Dirac's quantum constraints cannot be
constructed factoring the quantum state space by the ``simple'' gauge
transformations generated by the constraints. However, we show here that it can
be constructed by factoring the state space by suitably defined ``complete''
gauge transformations. These are generated by the action of the quantum
constraints on individual components of the quantum state.

17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess