Grid drawings of k-colourable graphs

  • Authors:
  • David R. Wood

  • Affiliations:
  • School of Computer Science, Carleton University, Ottawa, Canada

  • Venue:
  • Computational Geometry: Theory and Applications
  • Year:
  • 2005

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Abstract

It is proved that every k-colourable graph on n vertices has a grid drawing with O(kn) area, and that this bound is best possible. This result can be viewed as a generalisation of the no-three-in-line problem. A further area bound is established that includes the aspect ratio as a parameter.