Computing Common Intervals of $K$ Permutations, with Applications to Modular Decomposition of Graphs

  • Authors:
  • Anne Bergeron;Cedric Chauve;Fabien de Montgolfier;Mathieu Raffinot

  • Affiliations:
  • bergeron.anne@uqam.ca;cedric.chauve@sfu.ca;fm@liafa.jussieu.fr and raffinot@liafa.jussieu.fr;-

  • Venue:
  • SIAM Journal on Discrete Mathematics
  • Year:
  • 2008

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Abstract

We introduce a new approach to compute the common intervals of $K$ permutations based on a very simple and general notion of generators of common intervals. This formalism leads to simple and efficient algorithms to compute the set of all common intervals of $K$ permutations that can contain a quadratic number of intervals, as well as a linear space basis of this set of common intervals. Finally, we show how our results on permutations can be used for computing the modular decomposition of graphs.