Scientific Computation and Applied & Industrial Mathematics Seminar: Sergio Gonzalez-Andrade

A mesh-independent and second-order accurate multigrid strategy to solve constrained parabolic optimal control problems is presented. The resulting algorithms appear to be robust with respect to change of values of the control parameters and have the ability to accommodate constraints on the control also in the limit case of bang-bang control. Central to the development of these multigrid schemes is the design of iterative smoothers which can be formulated as local semi smooth Newton methods.