María del Carmen Varaldo

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The behavior of the disjunctive operator, defined by Balas, Ceria and Cornuéjols, in the context of the " antiblocker duality diagram " associated with the stable set polytope, QSTAB(G), of a graph and its complement, was first studied by Aguilera, Escalante and Nasini. The authors prove the commutativity of this diagram in any number of iterations of the(More)
In this work we consider the uniform capacitated single-item single-machine lot-sizing problem with continuous start-up costs. A continuous start-up cost is generated in a period whenever there is a nonzero production in the period and the production capacity in the previous period is not saturated. This concept of start-up does not correspond to the(More)
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