Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $q$-Analogs of strongly regular graphs   We introduce the notion of $q$-analogs of strongly regular graphs and give
some first examples of such structures. We prove a necessary condition on the
parameters and show the connection to designs over finite fields.

4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph