Clique-Width for 4-Vertex Forbidden Subgraphs

  • Authors:
  • Andreas Brandstadt;Joost Engelfriet;Hoang-Oanh Le;Vadim V. Lozin

  • Affiliations:
  • Institut fur Informatik, Universitat Rostock, D-18051 Rostock, Germany;LIACS, Leiden University, P.O. Box 9512, 2300 RA Leiden, The Netherlands;Fachbereich Informatik, Technische Fachhochschule Berlin, D-13353 Berlin, Germany;RUTCOR, Rutgers University, 640 Bartholomew Rd., Piscataway, NJ 08854-8003, USA

  • Venue:
  • Theory of Computing Systems
  • Year:
  • 2006

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Abstract

Clique-width of graphs is a major new concept with respect to efficiency of graph algorithms. The notion of clique-width extends the one of treewidth, since bounded treewidth implies bounded clique-width. We give a complete classification of all graph classes defined by forbidden induced subgraphs of at most four vertices with respect to bounded or unbounded clique-width.