Characters of association schemes containing a strongly normal closed subset of prime index

Hanaki, Akihide

doi:10.1090/S0002-9939-07-08835-1

Characters of association schemes containing a strongly normal closed subset of prime index
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Proc. Amer. Math. Soc. 135 (2007), 2683-2687 Request permission

Abstract:

We consider a relation between characters of an association scheme and its strongly normal closed subsets with prime index. As an application of our result, we show that an association scheme of prime square order with a proper strongly normal closed subset is commutative.

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