Pathwidth of cubic graphs and exact algorithms

  • Authors:
  • Fedor V. Fomin;Kjartan Høie

  • Affiliations:
  • Department of Informatics, University of Bergen N-5020, Bergen, Norway;Department of Informatics, University of Bergen N-5020, Bergen, Norway

  • Venue:
  • Information Processing Letters
  • Year:
  • 2006

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Abstract

We prove that for any @?0 there exists an integer n"@? such that the pathwidth of every cubic (or 3-regular) graph on nn"@? vertices is at most (1/6+@?)n. Based on this bound we improve the worst case time analysis for a number of exact exponential algorithms on graphs of maximum vertex degree three.