We study a variant of the greedy algorithm for weight functions defined on the system of subsets of a given finite set E and show that this algorithm works exactly for "valuated DELTA-matroids." Examples come from valuation theory.
机构:
Inst Basic Sci IBS, Discrete Math Grp, Daejeon, South Korea
Korea Adv Inst Sci & Technol, Dept Math Sci, Daejeon, South KoreaInst Basic Sci IBS, Discrete Math Grp, Daejeon, South Korea
Lee, Duksang
Oum, Sang-il
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机构:
Inst Basic Sci IBS, Discrete Math Grp, Daejeon, South Korea
Korea Adv Inst Sci & Technol, Dept Math Sci, Daejeon, South KoreaInst Basic Sci IBS, Discrete Math Grp, Daejeon, South Korea