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* [http://wiki.mcs.anl.gov/NEOS/index.php/NEOS_Wiki NEOS wiki] the ubiquitous online source for optimization | * [http://wiki.mcs.anl.gov/NEOS/index.php/NEOS_Wiki NEOS wiki] the ubiquitous online source for optimization | ||

* [http://wiki.mcs.anl.gov/NEOS/index.php/SIAG/Optimization_View_and_News SIAG/OPT Views-and-News] the newsletter for the [http://www.siam.org/activity/optimization/ SIAM Activity Group on Optimization]. | * [http://wiki.mcs.anl.gov/NEOS/index.php/SIAG/Optimization_View_and_News SIAG/OPT Views-and-News] the newsletter for the [http://www.siam.org/activity/optimization/ SIAM Activity Group on Optimization]. | ||

− | * [http://www.mcs.anl.gov/research/LANS/events/listn/ LANS Informal | + | * [http://www.mcs.anl.gov/research/LANS/events/listn/ LISTn: LANS Informal Talks Network], see also [http://www.google.com/calendar/embed?src=e8r9gll7mc180cf279n49ancio%40group.calendar.google.com&ctz=America/Chicago the LISTn google calendar] |

''Contact:''<br> | ''Contact:''<br> |

## Revision as of 02:47, 25 February 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.

*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
- 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.
- 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.