Note: Hamiltonicity of 6-connected line graphs

  • Authors:
  • Mingquan Zhan

  • Affiliations:
  • -

  • Venue:
  • Discrete Applied Mathematics
  • Year:
  • 2010

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Abstract

Let G be a graph and let D"6(G)={v@?V(G)|d"G(v)=6}. In this paper we prove that: (i) If G is a 6-connected claw-free graph and if |D"6(G)|@?74 or G[D"6(G)] contains at most 8 vertex disjoint K"4's, then G is Hamiltonian; (ii) If G is a 6-connected line graph and if |D"6(G)|@?54 or G[D"6(G)] contains at most 5 vertex disjoint K"4's, then G is Hamilton-connected.