New Graph Classes of Bounded Clique-Width

  • Authors:
  • Andreas Brandstädt;Feodor F. Dragan;Hoàng-Oanh Le;Raffaele Mosca

  • Affiliations:
  • -;-;-;-

  • Venue:
  • WG '02 Revised Papers from the 28th International Workshop on Graph-Theoretic Concepts in Computer Science
  • Year:
  • 2002

Quantified Score

Hi-index 0.00

Visualization

Abstract

Clique-width of graphs is a major new concept with respect to efficiency of graph algorithms; it is known that every algorithmic problem expressible in a certain kind of Monadic Second Order Logic called LinEMSOL(驴1,L) by Courcelle, Makowsky and Rotics, is solvable in linear time on any graph class with bounded clique-width for which a k-expression for the input graph can be constructed in linear time. The concept 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 one-vertex extensions of the P4 with respect to their clique-width. Our results extend and improve recently published structural and complexity results in a systematic way.