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Mathematical proofs for questions arising in the synthesis and reconstruction of complex processes

The first part of the talk is dedicated to the synthesis of chemical and, more specifically, chromatographic processes. In this context we study the problem of designing an ideal separation of a binary mixture. Interesting questions in this context are to detect the minimal number of stages per zone for given purity requirements etc. In order to answer questions of this kind, we develop proofs for the infeasibility of nonlinear mixed integer optimization models. Recent developments for the latter topic are discussed. The second part of the talk deals with the question of reconstructing the set of all possible explanations for a given series of observed experimental molecular data. We present an exact algorithm for solving this problem that is based on combinatorial arguments.

Type of Seminar:
Public Seminar
Prof. Robert Weismantel
University of Magdeburg, Germany
Mar 16, 2009   16:30 /

ETH Zentrum, Main Building, Room HG G 19.1
Contact Person:

Prof. John Lygeros
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Biographical Sketch:
born : 29.06.1965 in München, Bavaria
1984–1988 Student of Mathematics and Economics (Wirtschaftsmathematik) at the University of Augsburg
1989 – 1991: Research Assistant at the University of Augsburg
02.07.1992 Conferral of degree “Dr. rer. nat.”
1.9.91 – 31.12.94: Scientific employee at the Konrad-Zuse-Zentrum, Berlin
1.1.95 – 12.5.98: Associate head of the department
1.3.94 – 1.6.94: CORE, Louvain la Neuve (Belgien) Combinatorial Optimization at ZIB
22.11.1995 Habilitation in Mathematics
since 13.5.98: Professor (C4) for Discrete Optimization at the University of Magdeburg
Since 2007 Head of research center “Dynamic Systems” at the University of Magdeburg.

Academic Awards
06/1993: Carl-Ramsauer Award 1993 for the dissertation
03/1997: Gerhard Hess-Prize of the German Science Foundation
11/2004: Otto-von-Guericke Research Award 2004
06/2007: IBM-Faculty Award 2007.

Membership in the editorial board of:
Mathematical Programming A
Discrete Optimization
Mathematical Methods of Operations Research.