Cycle Extendability of Hamiltonian Strongly Chordal Graphs
Cycle Extendability of Hamiltonian Strongly Chordal Graphs
复制标题
哈密尔顿强弦图的循环可延性
DOI:
10.1137/20m1369920
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发表时间:
2020-07
影响因子:
0.8
通讯作者:
Yongjie Yang
中科院分区:
文献类型:
--
作者:
Guozhen Rong;Wenjun Li;Jianxin Wang;Yongjie Yang
In 1990, Hendry conjectured that all Hamiltonian chordal graphs are cycle extendable. After a series of papers confirming the conjecture for a number of graph classes, the conjecture is yet refuted by Lafond and Seamone in 2015. Given that their counterexamples are not strongly chordal graphs and they are all only $2$-connected, Lafond and Seamone asked the following two questions: (1) Are Hamiltonian strongly chordal graphs cycle extendable? (2) Is there an integer $k$ such that all $k$-connected Hamiltonian chordal graphs are cycle extendable? Later, a conjecture stronger than Hendry's is proposed. In this paper, we resolve all these questions in the negative. On the positive side, we add to the list of cycle extendable graphs two more graph classes, namely, Hamiltonian $4$-leaf powers and Hamiltonian {4-FAN, $\overline{A}$}-free chordal graphs.
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DOI:
10.1016/j.disc.2006.03.030
发表时间:
2006-07
期刊:
Discret. Math.
影响因子:
--
作者:
D. Rautenbach
通讯作者:
D. Rautenbach
影响因子:
0.7
作者:
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DOI:
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发表时间:
2017
期刊:
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影响因子:
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作者:
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通讯作者:
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发表时间:
1973-12
期刊:
The Mathematical Gazette
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
2010
期刊:
--
影响因子:
--
作者:
M. Loebl
通讯作者:
M. Loebl