Vanishing conditions on parameters for P(Q)-polynomial association schemes
نویسندگان
چکیده
منابع مشابه
COMMUTATIVITY OF ASSOCIATION SCHEMES OF ORDER pq
Let (X,S) be an association scheme where X is a finite set and S is a partition of X × X. The size of X is called the order of (X,S). We define C to be the set of positive integers m such that each association scheme of order m is commutative. It is known that each prime is belonged to C and it is conjectured that each prime square is belonged to C. In this article we give a sufficient conditio...
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ژورنال
عنوان ژورنال: Discrete Mathematics
سال: 2001
ISSN: 0012-365X
DOI: 10.1016/s0012-365x(00)00409-x