Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The special role of the first Matsubara frequency for superconductivity
  near a quantum-critical point -- the non-linear gap equation below $T_c$ and
  spectral properties in real frequencies
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math