Bull. Korean Math. Soc. 2015; 52(5): 1683-1709
Printed September 30, 2015
https://doi.org/10.4134/BKMS.2015.52.5.1683
Copyright © The Korean Mathematical Society.
Jeong Rye Park
Pusan National University
Let $(\Omega,S)$ be an association scheme where $\Omega$ is a non-empty finite set and $S$ is a partition of $\Omega\times\Omega$. For a positive integer $k$ we say that $(\Omega,S)$ is {\it $k$-equivalenced} if each non-diagonal element of $S$ has valency $k$. In this paper we focus on $4$-equivalenced association schemes, and prove that they are transitive.
Keywords: association schemes, equivalenced, Frobenius, schurian, transitive
MSC numbers: 05E30
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