Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Irreducible Hamiltonian approach to the Freedman-Townsend model   The irreducible BRST symmetry for the Freedman-Townsend model is derived. The
comparison with the standard reducible approach is also addressed.

31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics