Seminar series
Date
Tue, 15 Oct 2013
Time
14:30 -
15:00
Location
L5
Speaker
Lorenz John
Organisation
Graz University of Technology
We present a multilevel preconditioner for the mixed finite element discretization of the biharmonic equation of first kind. While for the interior degrees of freedom a standard multigrid methods can be applied, a different approach is required on the boundary. The construction of the preconditioner is based on a BPX type multilevel representation in fractional Sobolev spaces. Numerical examples illustrate the obtained theoretical results.