Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A note on [D. G. Higman 1988 : Strongly regular designs and coherent
  configurations of type $[{3\atop {\;}}\;\;{2\atop 3}]$]   In 1988, D. G. Higman gave properties of parameters of strongly regular
designs without proof. It included an error. We will give proofs and correct
the error.

35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph