A new sufficient condition for Hamiltonicity of graphs

  • Authors:
  • Rao Li

  • Affiliations:
  • Department of Mathematical Sciences, University of South Carolina Aiken, Aiken, SC 29801, USA

  • Venue:
  • Information Processing Letters
  • Year:
  • 2006

Quantified Score

Hi-index 0.89

Visualization

Abstract

Rahman and Kaykobad proved the following theorem on Hamiltonian paths in graphs. Let G be a connected graph with n vertices. If d(u)+d(v)+@d(u,v)=n+1 for each pair of distinct non-adjacent vertices u and v in G, where @d(u,v) is the length of a shortest path between u and v in G, then G has a Hamiltonian path. It is shown that except for two families of graphs a graph is Hamiltonian if it satisfies the condition in Rahman and Kaykobad's theorem. The result obtained in this note is also an answer for a question posed by Rahman and Kaykobad.