Counting and packing Hamilton cycles in dense graphs and oriented graphs
Counting and packing Hamilton cycles in dense graphs and oriented graphs
复制标题
在密集图和有向图中计算和打包汉密尔顿循环
DOI:
10.1016/j.jctb.2016.06.001
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
B. Sudakov
中科院分区:
文献类型:
--
作者:
Asaf Ferber;Michael Krivelevich;B. Sudakov
We present a general method for counting and packing Hamilton cycles in dense graphs and oriented graphs, based on permanent estimates. We utilize this approach to prove several extremal results. In particular, we show that every nearly cn-regular oriented graph on n vertices with c> 3/8 contains (c n/e) n (1+ o (1)) n directed Hamilton cycles. This is an extension of a result of Cuckler, who settled an old conjecture of Thomassen about the number of Hamilton cycles in regular tournaments. We also prove that every graph G on n vertices of minimum degree at least (1/2+ o (1)) n contains at least (1− o (1)) reg even (G)/2 edge-disjoint Hamilton cycles, where reg even (G) is the maximum even degree of a spanning regular subgraph of G. This establishes an approximate version of a conjecture of Kühn, Lapinskas and Osthus.
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DOI:
10.1112/jlms/jdn065
发表时间:
2008-01
期刊:
Journal of the London Mathematical Society
影响因子:
--
作者:
Peter Keevash;D. Kühn;Deryk Osthus
通讯作者:
Peter Keevash;D. Kühn;Deryk Osthus
DOI:
10.1016/j.jctb.2011.10.005
发表时间:
2009-08
期刊:
J. Comb. Theory B
影响因子:
--
作者:
Demetres Christofides;D. Kühn;Deryk Osthus
通讯作者:
Demetres Christofides;D. Kühn;Deryk Osthus
DOI:
10.1017/s0963548312000569
发表时间:
2012
期刊:
Combinatorics, Probability and Computing
影响因子:
--
作者:
KÜHN D
通讯作者:
KÜHN D
DOI:
10.1137/120884316
发表时间:
2013
期刊:
SIAM J. Discret. Math.
影响因子:
--
作者:
R. Glebov;M. Krivelevich
通讯作者:
M. Krivelevich
DOI:
10.48550/arxiv.0807.1827
发表时间:
2008
期刊:
--
影响因子:
--
作者:
Kühn D
通讯作者:
Kühn D