Events

Lothar Collatz Kolloquium für Angewandte Mathematik

Schedule for the Winter Term 2011/2012 can be found here.

Lothar Collatz Seminar

Tuesday, January 31, 10-12 am in GEOM 127, Bundesstrasse 55

Wei Gong

Finite element approximation to parabolic equation with measure data and its application to optimal control

Abstract: In this talk we will consider the finite element approximations to parabolic equations with measure data, especially we consider the parabolic problems with measure data in time and space. This kind of problems are motivated from parabolic optimal control problems, such as parabolic optimal control problems with pointwise control or pointwise state constraints in time. The existence and uniqueness of the solutions to this kind of problems are argued by using transposition techniques introduced by Lions and Magenes. We derive the a priori error estimates for both the semi-discrete and fully discrete finite element approximations. As an application, we also consider the finite element approximations to the parabolic optimal control problems with pointwise control. We give some numerical experiments at the end of the talk to confirm our theoretical findings.
This is a joint work with Professor Michael Hinze and Dr. Zhaojie Zhou.

 

Tuesday, December 20, 2-3 pm in GEOM 127, Bundesstrasse 55

Dr. Kasra Mohaghegh

Linear and non-linear Model Order Reduction for circuit simulation

Abstract:
In this presentation we will talk about linear and non-linear model order reduction for circuit simulation. An introduction on linear techniques such as Spectral Zeros Preservation, PRIMA, SPRIM and PMTBR will be given. Spectral Zeros Preservation will be discussed in more details.  An Overview of existing methods for Non-linear MOR will be presented.

 

Upcoming

  1. July 23-24, 2012: Summer School on Adaptivity and Model Order Reduction in PDE Constrained Optimization. Lecturers Ronald W. Hoppe, Bernd. Noak, Gianluigi Rozza and  Andreas Veeser. Sponsored by the European Science Foundation through the program OPTPDE

  2. July 25-27, 2012: Workshop on Adaptivity and Model Order Reduction in PDE Constrained Optimization. Sponsored by the European Science Foundation through the program OPTPDE.