Fast Distributed Approximations in Planar Graphs

  • Authors:
  • Andrzej Czygrinow;Michal Hańćkowiak;Wojciech Wawrzyniak

  • Affiliations:
  • Department of Mathematics and Statistics, Arizona State University, Tempe, USA AZ 85287-1804;Faculty of Mathematics and Computer Science, Adam Mickiewicz University, Poznań, Poland;Faculty of Mathematics and Computer Science, Adam Mickiewicz University, Poznań, Poland

  • Venue:
  • DISC '08 Proceedings of the 22nd international symposium on Distributed Computing
  • Year:
  • 2008

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Abstract

We give deterministic distributed algorithms that given 茂戮驴 0 find in a planar graph G, (1±茂戮驴)-approximations of a maximum independent set, a maximum matching, and a minimum dominating set. The algorithms run in O(log*|G|) rounds. In addition, we prove that no faster deterministic approximation is possible and show that if randomization is allowed it is possible to beat the lower bound for deterministic algorithms.