A survey on Hamilton cycles in directed graphs

被引：43
|
作者：
Kuehn, Daniela [1 ]
Osthus, Deryk [1 ]
机构：
[1] Univ Birmingham, Sch Math, Birmingham B15 2TT, W Midlands, England
来源：
EUROPEAN JOURNAL OF COMBINATORICS | 2012年 / 33卷 / 05期
关键词：
SUFFICIENT CONDITIONS; PATHS; DIGRAPH; TOURNAMENTS; CONJECTURE; CIRCUITS; NUMBER; PROOF;
D O I：
10.1016/j.ejc.2011.09.030
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
We survey some recent results on long-standing conjectures regarding Hamilton cycles in directed graphs, oriented graphs and tournaments. We also combine some of these to prove the following approximate result towards Kelly's conjecture on Hamilton decompositions of regular tournaments: the edges of every regular tournament can be covered by a set of Hamilton cycles which are 'almost' edge-disjoint. We also highlight the role that the notion of 'robust expansion' plays in several of the proofs. New and old open problems are discussed. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：750 / 766
页数：17
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