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A construction of imprimitive symmetric graphs which are not multicovers of their quotients

arXiv:0905.2516 · doi:10.1016/j.disc.2011.08.006

Abstract

This paper gives a sufficient and necessary condition for the existence of an (X, s)-arc-transitive imprimitive graph which is not a multicover of a given quotient graph.

16 pages with 1 figure, Published in Discrete Math 2011