A 2-Factor in a Graph and the Number of Its Components
A 2-Factor in a Graph and the Number of Its Components
批准号:
19500017
负责人:
SAITO Akira
金额:
$2.75万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2007
资助国家:
日本
项目状态:
已结题
起止时间:
2007 至 2009
中文摘要
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英文摘要
In this research, we interpreted a hamiltonian cycle as a 2-factor with one component, and investigated conditions which differentiate the existence of a hamiltonian cycle and that of a 2-factor, or more generally, which give information on the number of components in a 2-factor. We chose Dirac's condition, the Chvatal-Erdos condition and conditions based on forbidden subgraphs. We discovered that while neither Dirac's condition nor the Chvatal-Erdos condition gives any information on the number of components in a 2-factor, there is a notable difference between forbidden subgraphs forcing the existence of a hamiltonian cycle and those forcing the existence of a 2-factor.
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Forbidden subgraphs and 2-factors(招待講演)
禁止子图和二因子(特邀演讲)
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
[R.J. Faudree, A. Saito, R.H. Schelp, I. Schiermeyer, Y. Hasegawa, S. Bau, S. Fujita, 斎藤明, Akira Saito, 斎藤明]
通讯作者:
斎藤明
Cycles of length modulo k(招待講演)
长度模 k 的循环(特邀报告)
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
[R.J. Faudree, A. Saito, R.H. Schelp, I. Schiermeyer, Y. Hasegawa, S. Bau, S. Fujita, 斎藤明]
通讯作者:
斎藤明
Bipartite graphs (招待講演)
二分图(特邀报告)
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
[R.J. Faudree, A. Saito, R.H. Schelp, I. Schiermeyer, Y. Hasegawa, S. Bau, S. Fujita, 斎藤明, Akira Saito, 斎藤明, Akira Saito, 斎藤明, 斎藤 明]
通讯作者:
斎藤 明
DOI:
--
发表时间:
2008-12
期刊:
The Australasian Journal of Combinatorics
影响因子:
--
作者:
[J. Fujisawa;A. Hansberg;Takahiro Kubo;Akira Saito;Masahide Sugita;L. Volkmann]
通讯作者:
J. Fujisawa;A. Hansberg;Takahiro Kubo;Akira Saito;Masahide Sugita;L. Volkmann
DOI:
--
发表时间:
2007
期刊:
Discrete Mathematics Vol.307
影响因子:
--
作者:
[Y. Hasegawa, A. Saito]
通讯作者:
A. Saito
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