Abstract:According to recent studies, communication networks built on extremal Cayley digraphs of finite cyclic groups have many advantages over that based on n-cubes. Extremal Cayley digraphs have been studied extensively in recent years. In this paper, we prove, for every positive integer k, that the k-wide diameter of the Cayley digraph Cay(Z m , A) is at most diam(Cay(Z m , A)) + 1 if A is an "m-ideal" set of k positive integers.
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