Redundant constraints are constraints that can be omitted from a system of linear constraints without changing the feasible region. Implicit equalities are inequality constraints that can be replaced by equalities without changing the feasible region. We prove some theorems concerning the...

Purpose: The procurement and supply of crucial healthcare products in the early stages of the COVID-19 emergency were chaotic. To prepare for future crises, we must be able to describe what went wrong, and why, and map out ways to build agility and resilience. How can this be done effectively,...

We consider the situation in which a buying organization deals with a discrete quantity discount schedule offered by a selling organization. Furthermore, the buying organization can negotiate with the selling organization about the lot size and purchase price, but does not know the underlying...