We give strong formulations of ramping constraints â€” used to model the maximum change in production level for a generator or machine from one time period to the next â€” and production limits. For theâ€¦ (More)

We study a variant of the classical transportation problem in which suppliers with limited capacities have a choice of which demands (markets) to satisfy. We refer to this problem as theâ€¦ (More)

It is well-known that the intersection of the matching polytope with a cardinality constraint is integral [8]. We prove a similar result for the polytope corresponding to the transportation problemâ€¦ (More)