Efficient Analysis of Graphs with Small Minimal Separators

  • Authors:
  • Konstantin Skodinis

  • Affiliations:
  • -

  • Venue:
  • WG '99 Proceedings of the 25th International Workshop on Graph-Theoretic Concepts in Computer Science
  • Year:
  • 1999

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Abstract

Abstract We consider the class C* of graphs whose minimal separators have a fixed bounded size. We give an O(nm)-time algorithm computing an optimal tree-decomposition of every graph in C* with n vertices and m edges. Furthermore we make evident that many NP-complete problems are solvable in polynomial time when restricted to this class. Both claims hold although C* contains graphs of arbitrarily large tree-width.