Many famous graphs are edge-primitive, for example, the Heawood graph, the Tutte-Coxeter graph and the Higman-Sims graph. In this paper we systematically analyse edge-primitive and edge-quasiprimitive graphs via the O'Nan-Scott Theorem to determine the possible edge and vertex actions of such graphs. Many interesting examples are given and we also determine all G-edge-primitive graphs for G an almost simple group with socle PSL(2, q). (C) 2009 Elsevier Inc. All rights reserved.
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Nanchang Normal Univ, Sch Math & Informat Sci, Nanchang 330032, Peoples R ChinaNanchang Normal Univ, Sch Math & Informat Sci, Nanchang 330032, Peoples R China
Xiao, Renbing
Zhang, Xiaojiao
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Nanchang Normal Univ, Sch Math & Informat Sci, Nanchang 330032, Peoples R ChinaNanchang Normal Univ, Sch Math & Informat Sci, Nanchang 330032, Peoples R China
Zhang, Xiaojiao
Zhang, Hua
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Yunnan Normal Univ, Sch Math, Kunming 650091, Peoples R ChinaNanchang Normal Univ, Sch Math & Informat Sci, Nanchang 330032, Peoples R China
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Tsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R ChinaTsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R China
Song, Shujiao
Li, Caiheng
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Univ Western Australia, Ctr Math Symmetry & Computat, Sch Math & Stat, Crawley, WA 6009, AustraliaTsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R China
Li, Caiheng
Wang, Dianjun
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Tsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R ChinaTsinghua Univ, Dept Math Sci, Beijing 100084, Peoples R China
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Nankai Univ, LPMC TJKLC, Ctr Combinator, Tianjin 300071, Peoples R ChinaNankai Univ, LPMC TJKLC, Ctr Combinator, Tianjin 300071, Peoples R China
Liao, Hong Ci
Li, Jing Jian
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Guangxi Univ, Sch Math & Informat Sci, Nanning 530004, Peoples R China
Coll & Univ Key Lab Math & Its Applicat, Nanning, Peoples R ChinaNankai Univ, LPMC TJKLC, Ctr Combinator, Tianjin 300071, Peoples R China
Li, Jing Jian
Lu, Zai Ping
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Nankai Univ, LPMC TJKLC, Ctr Combinator, Tianjin 300071, Peoples R ChinaNankai Univ, LPMC TJKLC, Ctr Combinator, Tianjin 300071, Peoples R China