An infinite family of sharply two-arc transitive digraphs |
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Institution: | Departament de Matemàtica Aplicada IV, Universitat Politècnica de Catalunya, Av. del Canal Olímpic, s/n, 08860 Castelldefels, Spain |
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Abstract: | We disclaim Conjecture 1 posed by Seifter in N. Seifter, Transitive digraphs with more than one end, Discrete Math., to appear], that stated that a connected locally finite digraph with more than one end is either 0-, 1- or highly arc transitive. We describe in this work an infinite family of 2-arc transitive two-ended digraphs, that are not 3-arc transitive. |
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