/manager/Index ${session.getAttribute("locale")} 5 Large vertex-transitive graphs of diameter 2 from incidence graphs of biaffine planes /manager/Repository/uon:17239 Sat 24 Mar 2018 07:59:14 AEDT ]]> An algebraic approach to lifts of digraphs /manager/Repository/uon:36785 α of a voltage digraph, which has arcs weighted by the elements of a group. As a main result, when the involved group is Abelian, we completely determine the spectrum of Γα. As some examples of our technique, we study some basic properties of the Alegre digraph, and completely characterize the spectrum of a new family of digraphs, which contains the generalized Petersen graphs, and the Hoffman-Singleton graph.]]> Mon 06 Jul 2020 09:53:43 AEST ]]>