Monadic Second Order Logic on Graphs with Local Cardinality Constraints

  • Authors:
  • Stefan Szeider

  • Affiliations:
  • Department of Computer Science, Durham University, UK

  • Venue:
  • MFCS '08 Proceedings of the 33rd international symposium on Mathematical Foundations of Computer Science
  • Year:
  • 2008

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Abstract

We show that all problems of the following form can be solved in polynomial time for graphs of bounded treewidth: Given a graph Gand for each vertex vof Ga set 茂戮驴(v) of non-negative integers. Is there a set Sof vertices or edges of Gsuch that Ssatisfies a fixed property expressible in monadic second order logic, and for each vertex vof Gthe number of vertices/edges in Sadjacent/incident with vbelongs to the set 茂戮驴(v)? A wide range of problems can be formulated in this way, for example Lovász's General Factor Problem.