I am a computational mathematician in the Mathematics and Computer Science Division at Argonne National Laboratory, and a Fellow of the Computation Institute. I am interested in the development of reliable methods for solving large-scale nonlinear optimization problems and in the implementation and analysis of filter type algorithms. This forms the basis from which I am extending nonlinear optimization methodologies to emerging areas such as mixed-integer nonlinear optimization and optimization problems with complementarity constraints.

- Current Research Interests & Testproblem Libraries
- LANS Informal Seminar Series
- Publications & Preprints
- Software (under construction)
- NEOS wiki, an online source for optimization
- SIAG/OPT Views-and-News the newsletter for the SIAM Activity Group on Optimization.

I belong to the LANS group, and we run an informal seminar series called LISTn: the LANS Informal Seminar Talks network. You can import upcoming talks into you google calendar from the LISTn google calendar.

*Contact:*

Sven Leyffer (see my google calendar for busy times)

Mathematics and Computer Science Division

Argonne National Laboratory

Argonne, Il 60439, USA

E-mail: leyffer at mcs.anl.gov

Phone: (630) 252-4698; Fax: (630) 252-5986

Some old personal stuff about Gwen & Sven Leyffer.