Treewidth and minimum fill-in of weakly triangulated graphs

  • Authors:
  • Vincent Bouchitté;Ioan Todinca

  • Affiliations:
  • LIP-&Ecole Normale Supéérieure de Lyon, Lyon Cedex 07, France;LIP-&Ecole Normale Supéérieure de Lyon, Lyon Cedex 07, France

  • Venue:
  • STACS'99 Proceedings of the 16th annual conference on Theoretical aspects of computer science
  • Year:
  • 1999

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Abstract

We use the notion of potential maximal clique to characterize the maximal cliques appearing in minimal triangulations of a graph. We show that if these objects can be listed in polynomial time for a class of graphs, the treewidth and the minimum fill-in are polynomially tractable for these graphs. Finally we show how to compute in polynomial time the potential maximal cliques of weakly triangulated graphs.