The random planar graph process

  • Authors:
  • Stefanie Gerke;Dirk Schlatter;Angelika Steger;Anusch Taraz

  • Affiliations:
  • ETH Zurich, Institute of Theoretical Computer Science, 8092 Zurich, Switzerland;Humboldt University Berlin, Institute of Computer Science, 10099 Berlin, Germany;ETH Zurich, Institute of Theoretical Computer Science, 8092 Zurich, Switzerland;Technical University München, Centre for Mathematical Sciences, 85747 Garching bei München, Germany

  • Venue:
  • Random Structures & Algorithms
  • Year:
  • 2008

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Abstract

We consider the following variant of the classical random graph process introduced by Erdős and Rényi. Starting with an empty graph on n vertices, choose the next edge uniformly at random among all edges not yet considered, but only insert it if the graph remains planar. We show that for all ε 0, with high probability, &thetas;(n2) edges have to be tested before the number of edges in the graph reaches (1 + ε)n. At this point, the graph is connected with high probability and contains a linear number of induced copies of any fixed connected planar graph, the first property being in contrast and the second one in accordance with the uniform random planar graph model. © 2007 Wiley Periodicals, Inc. Random Struct. Alg., 2008