• Media type: E-Article; Electronic Conference Proceeding; Text
  • Title: Linear-time certifying recognition for partitioned probe cographs
  • Contributor: Le, Van Bang [Author]; de Ridder, H.N. [Author]
  • imprint: Schloss Dagstuhl – Leibniz-Zentrum für Informatik, 2007
  • Language: English
  • DOI: https://doi.org/10.4230/DagSemProc.07211.2
  • Keywords: probe cograph ; Cograph ; certifying graph algorithm
  • Origination:
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  • Description: Cographs are those graphs without induced path on four vetices. A graph $G=(V, E)$ with a partition $V=Pcup N$ where $N$ is an independent set is a partitioned probe cograph if one can add new edges between certain vertices in $N$ in such a way that the graph obtained is a cograph. We characterize partitioned probe cographs in terms of five forbidden induced subgraphs. Using this characterization, we give a linear-time recognition algorithm for partitioned probe cographs. Our algorithm produces a certificate for membership that can be checked in linear time and a certificate for non-membership that can be checked in sublinear time.
  • Access State: Open Access