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Weakly greedy algorithm and pair-delta-matroids

  • Takashi Takabatake
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1120)

Abstract

Weakly greedy algorithm is an extension of the greedy algorithm. It gives a solution of a combinatorial optimization problem on discrete systems in a properly wider class than the class of Δ-matroids. Discrete systems with a certain 2 to 2 exchangeability belong to this class. We characterize these systems in terms of their rank function. Excluded minors of Δ-matroids and these systems are also described.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • Takashi Takabatake
    • 1
  1. 1.Graduate Division of International and Interdisciplinary StudiesUniversity of TokyoTokyoJapan

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