A three-class association scheme on the
✍
I.M. Chakravarti
📂
Article
📅
1993
🏛
Elsevier Science
🌐
English
⚖ 262 KB
First we define relations between the u = (s\* + s + 1) (s + 1) flags (point-line incident pairs) of a finite projective plane of order s. Two flags a E (p, 1) and b = (p', l'), where p and p' are two points and 1 and 1' are two lines of the projective plane, are defined to