A detailed description of the structure of two-ended arc-transitive digraphs is given. It is also shown that several sets of conditions, involving such concepts as Property Z, local quasi-primitivity and prime out-valency, imply that an arc-transitive digraph must be highly-arc-transitive. These are then applied to give a complete classification of two-ended highly-arc-transitive digraphs with prime in- and out-valencies. (C) 2018 Elsevier Ltd. All rights reserved.
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Univ Auckland, Dept Math, Auckland 1142, New ZealandUniv Auckland, Dept Math, Auckland 1142, New Zealand
Conder, Marston D. E.
Li, Cai Heng
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Univ Western Australia, Sch Math & Stat, Crawley, WA 6009, AustraliaUniv Auckland, Dept Math, Auckland 1142, New Zealand
Li, Cai Heng
Potocnik, Primoz
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Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia
Univ Primorska, IAM, SI-6000 Koper, Slovenia
IMFM, SI-1000 Ljubljana, SloveniaUniv Auckland, Dept Math, Auckland 1142, New Zealand
机构:
Guangxi Univ, Coll Math & Informat Sci, Nanning 530004, Peoples R China
Guangxi Coll & Univ Key Lab Math & Its Applicat, Nanning 530003, Peoples R ChinaGuangxi Univ, Coll Math & Informat Sci, Nanning 530004, Peoples R China
Li, Jingjian
Ma, Jicheng
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Chongqing Univ Arts & Sci, Chongqing Key Lab Grp & Graph Theories & Applicat, Chongqing 402160, Peoples R ChinaGuangxi Univ, Coll Math & Informat Sci, Nanning 530004, Peoples R China