Laurence Wolsey

Laurence Wolsey works at CORE (Center for Operations Research and Econometrics) and is emeritus professor of applied mathematics and operations research in the department of  Engineering Mathematics of l'Universite catholique de Louvain in Louvain-la-Neuve, Belgium.

His main field of research is mixed integer programming, including theory, the development of branch-and-cut systems, and applications in production planning and scheduling and in network design.

He is author of a textbook "Integer Programming" Wiley 1998, as well as joint author with George Nemhauser of "Integer Programming and Combinatorial Optimization",Wiley 1988, and "Production Planning by Mixed Integer Programming" with Y. Pochet, Springer 2006.

Recently he has been particularly interested in the polyhedral structure of simple mixed integer programming sets, in particular mixing sets and their generalizations that have important applications in lot-sizing, and sets arising from two or more rows of a simplex tableau, an area that has been receiving much attention recently. More generally he is interested in the existence and use  of extended formulations involving additional variables, especially as a computational tool.

He has worked closely with groups at BASF (production planning), France Telecom (multiplexer assignment) and DASH (commercial mixed integer programming systems) among others.

He  received    the Orchard-Hays prize in 1988 from the Mathematical Programming Society (with T.J. Van Roy), the Lanchester Prize in 1989 from the Operations Research Society of America (with G.L. Nemhauser), and the EURO Gold Medal in 1994. He was editor-in-chief of the Mathematical Programming journal from 1999-2003.

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