Title
Hamiltonian graphs involving neighborhood conditions.
Abstract
Let G be a graph on n vertices, delta and alpha be the minimum degree and independmice number of G, respectively. We prove that if G is a 2-connected graph and vertical bar N(x)boolean OR N(y)vertical bar >= n-delta-1 for each pair of nonadjacent vertices x, y with 1 <= vertical bar N(x)boolean AND N(y)vertical bar <= alpha - 1, then G is hamiltonian or G is an element of {G(1), G(2)} (see Figure 1.1 and Figure 1.2). As a corollary, if G is a 2-connected graph and vertical bar N(x)boolean OR N(y)vertical bar >= n - delta for each pair of nonadjacent vertices y with 1 <= vertical bar N(x) boolean AND N(y)vertical bar <= alpha - 1, then G is hamiltonian. This result extends former results by Faudree et al ([5]) and Yin ([7]).
Year
DOI
Venue
2012
null
ARS COMBINATORIA
Keywords
Field
DocType
hamiltonian,neighborhood unions,neighborhood intersection,an essential independent set
Discrete mathematics,Graph,Independence number,Combinatorics,Vertex (geometry),Hamiltonian (quantum mechanics),Hamiltonian path problem,Mathematics
Journal
Volume
Issue
ISSN
105
null
0381-7032
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Kewen Zhao142.56
Lili Zhang211.38
Hong-Jian Lai363197.39
Yehong Shao410214.70