Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New construction of strongly regular graphs with parameters of the
  complement of symplectic graph   Symplectic graph Sp(2d, q) is the collinearity graph of the symplectic space
of dimension 2d over a finite field of order q. A k-regular graph on v vertices
is a divisible design graph with parameters (v, k, lambda_1, lambda_2 ,m,n) if
its vertex set can be partitioned into m classes of size n, such that any two
different vertices from the same class have lambda_1 common neighbours, and any
two vertices from different classes have lambda_2 common neighbours whenever it
is not complete or edgeless. In this paper we present a new prolific
construction of strongly regular graphs with parameters of the complement of
symplectic graph using a new prolific construction of one type of divisible
design graphs.

15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol