ORIE Colloquium: Andrea Lodi (University of Bologna) - Mixed-Integer Programming Solvers: From Where to Where Thursday, June 27, 2013 at 12:30pm Frank H. T. Rhodes Hall, 253 The first fifty (five) years of Integer and Mixed-Integer Linear Programming have taken us to a very stable paradigm for solving problems in a reliable and effective way. We run over these 50 exciting years by showing some crucial milestones and we highlight the building blocks that are making nowadays solvers effective from both a performance and an application viewpoint. Finally, we show that a lot of work must still be done for improving the solvers and extending their modeling capability and we discuss the current exciting challenges of Mixed-Integer Nonlinear Programming.