Hamilton Cycles in Almost-Regular 2-Connected Graphs

Hamilton Cycles in Almost-Regular 2-Connected Graphs
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几乎正则 2 连通图中的哈密顿循环

DOI:
10.1006/jctb.1993.1007
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发表时间:
1993
期刊:
J. Comb. Theory B
影响因子:
--
通讯作者:
B. Jackson
B. Jackson
中科院分区:
--
文献类型:
--
作者:
B. Jackson

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设k和s为整数,1≤s≤4。设G为顶点度数在k和k + s之间的图,且|G|≤3k−c(s), 1≤或|G|≤2.5k−c(s), s = 4,对于s的合适常数c(s),我们得到了G是哈密顿的一个充分必要条件。特别地,我们证明了如果s = 1且n = |G|≤3k−1,则G是哈密顿函数,除非n是奇数且α(G) = 12(n + 1)。
Let k and s be integers, 1 ≤ s ≤ 4. Let G be a graph whose vertices have degrees between k and k + s, and |G| ≤ 3k − c(s), 1 ≤ or |G| ≤ 2.5k − c(s), s = 4, for suitable constants c(s) depending on s. We obtain a necessary and sufficient condition for G to be hamiltonian. In particular we show that if s = 1 and n = |G| ≤ 3k − 1 then G is hamiltonian unless n is odd and α(G) = 12(n + 1).