The Ramsey numbers for stars of even order versus a wheel of order nine

  • Authors:
  • Yunqing Zhang;Yaojun Chen;Kemin Zhang

  • Affiliations:
  • Department of Mathematics, Nanjing University, Nanjing 210093, PR China;Department of Mathematics, Nanjing University, Nanjing 210093, PR China;Department of Mathematics, Nanjing University, Nanjing 210093, PR China

  • Venue:
  • European Journal of Combinatorics
  • Year:
  • 2008

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Abstract

For two given graphs G"1 and G"2, the Ramsey number R(G"1,G"2) is the smallest positive integer n such that for any graph G of order n, either G contains G"1 or the complement of G contains G"2. Let S"n denote a star of order n and W"m a wheel of order m+1. In this paper, we show that R(S"n,W"8)=2n+2 for n=6 and n=0(mod2).