Hamiltonian Square-Paths

Hamiltonian Square-Paths
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DOI:
10.1006/jctb.1996.0039
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发表时间:
1996-07
期刊:
J. Comb. Theory B
影响因子:
--
通讯作者:
G. Fan;H. Kierstead
G. Fan;H. Kierstead
中科院分区:
其他
文献类型:
--
作者:
G. Fan;H. Kierstead

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哈密顿平方路径(-cycle)是从哈密顿路径(cycle)中通过连接路径(cycle)中距离为2的每对顶点而获得的路径(cycle)。画一个顶点最小度为?(G)的图。Posa和Seymour推测如果?(G)?23n,它包含一个哈密顿平方环。我们证明如果?(G)?(2n?)1)/3,则包含一条哈密顿平方路径。这个结果的一个结果是Aigner和Brandt的一个定理,它证实了这个情况。(H)=2 Bollabas?埃尔德里奇猜想:如果gandhare图与(?(G)+1)(?(H)+1)?n+1,可以打包。
A hamiltonian square-path (-cycle) is one obtained from a hamiltonian path (cycle) by joining every pair of vertices of distance two in the path (cycle). LetGbe a graph onnvertices with minimum degree?(G). Posa and Seymour conjectured that if?(G)?23n, thenGcontains a hamiltonian square-cycle. We prove that if?(G)?(2n?1)/3, thenGcontains a hamiltonian square-path. A consequence of this result is a theorem of Aigner and Brandt that confirms the case?(H)=2 of the Bollabas?Eldridge Conjecture: ifGandHare graphs onnvertices and (?(G)+1)(?(H)+1)?n+1, thenGandHcan be packed.