CAS Seminar

Peter Oswald

(Jacobs University)

"More on subspace correction methods"

Date: Wed, February 20, 2013
Time: 14:15
Place: Research I Seminar Room

Abstract: I will report on some ongoing research with Griebel and Hullmann (Bonn) on an old favorite of mine, the theory of additive Schwarz methods (to solve a "large" problem, cut it into (many) small and easy-to-solve problems, solve them (in parallel), combine the partial solutions into an update, and iterate). The new aspects we are interested in are:

I will give an introduction to subspace correction methods in the simplest situation of solving a linear system with spd matrix, mention the connection to subspace optimization methods in (convex) optimization, and show some numerical test results for sparse grid discretizations.