The chromatic Ramsey number of odd wheels

نویسندگان

  • Nathalie Paul
  • Claude Tardif
چکیده

We prove that the chromatic Ramsey number of every odd wheel W2k+1, k ≥ 2 is 14. That is, for every odd wheel W2k+1, there exists a 14-chromatic graph F such that when the edges of F are two-coloured, there is a monochromatic copy of W2k+1 in F , and no graph F with chromatic number 13 has the same property. We ask whether a natural extension of odd wheels to the family of generalized Mycielski graphs could help to prove the Burr–Erdős–Lovász on the minimum possible chromatic Ramsey number of a n-chromatic graph.

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عنوان ژورنال:
  • Journal of Graph Theory

دوره 69  شماره 

صفحات  -

تاریخ انتشار 2012