Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the integrability of strongly regular graphs   Koolen et al. showed that if a connected graph with smallest eigenvalue at
least $-3$ has large minimal valency, then it is $2$-integrable. In this paper,
we will prove that a lower bound for the minimal valency is 166.

15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs