Fields of Scholarship
Differentiation techniques for nonsmooth functions
Interior-point methods
Interactive software packages
Numerical methods in nonlinear programming
Approximation of NP-hard problems
Fluid Setworks: Convex models and numerical schemes for designing the fluid networks
Polynomial time methods for convex programming
Optimization theory
Automatic differentiation
Software for IBM-compatible personal computers
Transportation sciences
Optimal methods for convex programming

Honours and Awards
August 2000 Dantzig Prize, a joint award from the Mathematical Programming Society and SIAM
December 2000 Hooker Distinguished Visiting Professor, McMaster University, Canada
2009 John von Neumann Theory Prize of INFORMS
2009 Charles Broyden Prize for the best paper published in 2008 in Optimization Methods and Software
2010 EUROPT Fellow
2011 - 2012Honorable Francqui Chair (Liège University).
2013 Honorable Simon Stevin Lecture on Optimization in Engineering, Katholieke Universiteit Leuven
2014 SIAM Outstanding paper award
2016 Euro Gold Medal (awarded by The Association of European Research Societies).
2018 - 2023 ERC Advanced Grant
2019 Honorable Hotelling Lecture (North Carolina University)