Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mathematical quantum Yang-Mills theory revisited II: Mass without mass   Massless Dirac equation for spinor multiplets is minimally coupled with a
unitary representation of an arbitrary compact semisimple gauge group. The
spectrum of the second quantized interaction Hamiltonian has a positive mass
gap running along the classical energy scale.

30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph