On Horn Envelopes and Hypergraph Transversals

نویسندگان

  • Dimitris J. Kavvadias
  • Christos H. Papadimitriou
  • Martha Sideri
چکیده

We study the problem of bounding from above and below a given set of bit vectors by the set of satisfying truth assignments of a Horn formula. We point out a rather unexpected connection between the upper bounding problem and the problem of generating all transversals of a hypergraph, and settle several related complexity questions.

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تاریخ انتشار 1993