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Elsevier, Journal of Combinatorial Theory, Series B, 2(74), p. 276-290, 1998
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On 2-Arc-Transitive Covers of Complete Graphs
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Abstract
Regular covers of complete graphs which are 2-arc-transitive are investigated. A classification is given of all such graphs whose group of covering transformations is either cyclic or isomorphic to p×p, wherepis a prime and whose fibre- preserving subgroup of automorphisms acts 2-arc-transitively. As a result two new families of 2-arc-transitive graphs are obtained.