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:
影响因子:
--
通讯作者:
G. Fan;H. Kierstead
中科院分区:
文献类型:
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作者:
G. Fan;H. Kierstead
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.