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 Normal edge-transitive circulant graphs Bull. Korean Math. Soc. 2001 Vol. 38, No. 2, 317-324 Hyo-Seob Sim and Young-Won Kim Pukyong National University, Pukyong National University Abstract : A Cayley graph of a finite group $G$ is called {\sl normal edge-transitive} if its automorphism group has a subgroup which both normalizes $G$ and acts transitively on edges. In this paper, we consider Cayley graphs of finite cyclic groups, namely, finite circulant graphs. We characterize the normal edge-transitive circulant graphs and determine the normal edge-transitive circulant graphs of prime power order in terms of lexicographic products. Keywords : edge-transitive Cayley graphs, circulant graphs, lexicographic products MSC numbers : 05C25, 20B25 Downloads: Full-text PDF