Hadwiger's conjecture for powers of cycles and their complements

  • Authors:
  • Deming Li;Mingju Liu

  • Affiliations:
  • Department of Mathematics, Capital Normal University, Beijing 100037, China;LMIB and Department of Mathematics, Beihang University, Beijing 100083, China

  • Venue:
  • European Journal of Combinatorics
  • Year:
  • 2007

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Abstract

C. Thomassen showed that powers of certain cycles are counterexamples to Hajos' conjecture. We prove that powers of cycles and their complements satisfy Hadwiger's conjecture, that is, every k-chromatic graph has a k-clique as a minor.