Decomposition width of matroids

  • Authors:
  • Daniel Král

  • Affiliations:
  • Institute for Theoretical Computer Science, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic

  • Venue:
  • ICALP'10 Proceedings of the 37th international colloquium conference on Automata, languages and programming
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

Hlineny [J. Combin. Theory Ser. B 96 (2006), 325-351] showedz that every matroid property expressible in the monadic second order logic can be decided in linear time for matroids with bounded branchwidth that are represented over finite fields. To be able to extend these algorithmic results to matroids not representable over finite fields, we introduce a new matroid width parameter, the decomposition width, and show that every matroid property expressible in the monadic second order logic can be computed in linear time for matroids given by a decomposition with bounded width. We also relate the decomposition width to matroid branch-width and discuss implications of our results with respect to other known algorithms.