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      <text bytes="2429" sha1="kg2x9d2yth7hdc9erayo2f1xtvyf2lr" xml:space="preserve">[[Image:leyffer.jpg|thumb|150px|Sven Leyffer]]
I am a senior computational mathematician and deputy division director in the [http://www.mcs.anl.gov/ Mathematics and Computer Science Division] at [http://www.anl.gov/ Argonne National Laboratory]. I am a member of LANS, the [https://www.anl.gov/mcs/lans Laboratory for Applied Mathematics, Numerical Software, and Statistics (LANS)] , and a Senior Fellow of the [http://www.ci.uchicago.edu/ Computation Institute]. 

'''Research Statement:'''&lt;br&gt;
''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 other areas such as design-of-experiments, machine learning, quantum computing, and mixed-integer nonlinear optimization.''

'''Links:'''&lt;br&gt;
[[Sven Leyffer's Research|Current Research Interests &amp; Testproblem Libraries]]&lt;br&gt;
[[Sven Leyffer's Publications|Publications &amp; Preprints]]&lt;br&gt;
[[Sven Leyffer's Software|Software (under construction)]]&lt;br&gt;
[http://www.neos-server.org/neos/ NEOS server] the ubiquitous online source for optimization&lt;br&gt;
[http://wiki.siam.org/siag-op/index.php/View_and_News Views-and-News] the newsletter for the [http://www.siam.org/activity/optimization/ SIAM Activity Group on Optimization].

'''Student and Postdoc Opportunities:'''&lt;br&gt;
[http://www.mcs.anl.gov/career-opportunities/givens-associates Givens Associates]

'''LANS Seminars:'''&lt;br&gt;
[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&amp;ctz=America/Chicago the LISTn google calendar]

[[Image:MINLP-Book.jpg|thumb|115px]]
'''Book'''&lt;br&gt;
Jon Lee and Sven Leyffer (Eds). [http://www.springer.com/mathematics/analysis/book/978-1-4614-1926-6 ''Mixed Integer Nonlinear Programming''], in The IMA Volumes in Mathematics and its Applications, Vol. 154, Springer, 2012.

'''Contact:'''&lt;br&gt;
Sven Leyffer (see [http://www.google.com/calendar/embed?src=sven.leyffer@gmail.com&amp;ctz=America/Chicago my google calendar] for busy times)&lt;br&gt; 
Mathematics and Computer Science Division&lt;br&gt; 
Argonne National Laboratory&lt;br&gt; 
Argonne, Il 60439, USA&lt;br&gt; 
E-mail: [mailto:leyffer@anl.gov leyffer at anl.gov]&lt;br&gt; 
Phone: (630) 252-4698; Fax: (630) 252-5986</text>
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