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I am a computational mathematician and part of the Laboratory for Advanced Numerical Simulations ([http://www.mcs.anl.gov/research/group_detail.php?id=4 LANS]) in the [http://www-fp.mcs.anl.gov/division/welcome/default.asp Mathematics and Computer Science Division] at [http://www.anl.gov/ Argonne National Laboratory], and a Fellow of the [http://www.ci.uchicago.edu/ Computation Institute]. | I am a computational mathematician and part of the Laboratory for Advanced Numerical Simulations ([http://www.mcs.anl.gov/research/group_detail.php?id=4 LANS]) in the [http://www-fp.mcs.anl.gov/division/welcome/default.asp Mathematics and Computer Science Division] at [http://www.anl.gov/ Argonne National Laboratory], and a Fellow of the [http://www.ci.uchicago.edu/ Computation Institute]. | ||

## Revision as of 23:10, 5 March 2009

I am a computational mathematician and part of the Laboratory for Advanced Numerical Simulations (LANS) in the Mathematics and Computer Science Division at Argonne National Laboratory, and a Fellow of the Computation Institute.

**Research Statement:**

*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.*

**Links:**

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

**LANS Seminars:**

LISTn: LANS Informal Talks Network, see also 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.