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An analysis of approximations for maximizing submodular set functions-I. (English) Zbl 0374.90045


MSC:

90C05 Linear programming
05C35 Extremal problems in graph theory
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References:

[1] D.A. Babayev, ”Comments on the note of Frieze”,Mathematical Programming 7 (1974) 249–252. · Zbl 0294.90056
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[4] J. Edmonds, ”Submodular functions, matroids and certain polyhedra”, in: R. Guy, ed.,Combinatorial structures and their applications (Gordon and Breach, New York, 1971) pp. 69–87.
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[10] D.R. Woodall, ”Application of polymatroids and linear programming to transversals and graphs”, presented at the 1973 British Combinatorial Conference (Aberystwyth). · Zbl 0295.05008
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