Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting state in Fe-based materials and spin-fluctuation theory
  of pairing   Short review of the spin-fluctuation theory of superconductive pairing in
iron-based pnictides and chalcogenides.

19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph