On the set covering polytope: II. Lifting the facets with coefficients in {0, 1, 2}

In an earlier paper [I1 we characterized the class of facets of the set covering polytope defined by inequalities with coefficients equal to 0, 1 or S2. -iT this paper we connects/that characterization to the theory of facet lifting. In particular, we-introduc~ a family of lower dimensional polytopes and associated inequalities having only three nonzero coefficients, whose lifting yields all the valid inequalities in the above class, with the lifting coefficients given by closed form expressions. Accession For "" " DTIC TAB __ _ _ _ _ __ _ _ _ _ Ic Aysilabl1t Codes ,J'-' A " a ."5.and/or Dist Special