### Optimization and Systems Theory Seminar

Friday, November 7 2008, 11.00-12.00, Room 3721, Lindstedtsvägen 25

Andrea Gombani, ISIB-CNR, Padova, Italy

E-mail: gombani@isib.cnr.it

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Rational interpolation methods and the Sylvester Equation

We illustrate here how a
simple interpolation formula based on the Sylvester equation can be used to
obtain a parametrization of Schur interpolants of fixed degree when the Pick
matrix is singular. This idea is used to derive some results on reduced order
Schur interpolants. Joint work with Gy. Michaletzky.

Both theoretical and numerical results will be presented.

Calendar of seminars
*Last update: October 22, 2008 by
Marie Lundin.
*