Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalizations of the Dirac Equation and the Modified Bargmann-Wigner
  Formalism   We present various generalizations of the Dirac formalism. The
different-parity solutions of the Weinberg's 2(2J+1)-component equations are
found. On this basis, generalizations of the Bargmann-Wigner (BW) formalism are
proposed. Relations with modern physics constructs are discussed.

23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex