Hamiltonicity of {K1,4,K1,4 + e}-free graphs

  • Authors:
  • Rao Li;R. H. Schelp

  • Affiliations:
  • School of Computer and Information Sciences, Georgia Southwestern State University, Americus, GA;Department of Mathematical Sciences, The University of Memphis, Memphis, TN

  • Venue:
  • Discrete Mathematics
  • Year:
  • 2002

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Abstract

A graph G is called {H1, H2,...,Hk}-free if G contains no induced subgraph isomorphic to any Hi, 1 ≤ i ≤ k. Let G be a 3-connected {K1,4,,K1,4 + e}-free graphs of order n ≥ 30. If δ(G)≥(n + 5)/5, then G is hamiltonian, where K1,4+e is a graph obtained by joining a pair of nonadjacent vertices in a K1,4.