Einladung zum Vortrag (Zoom) von Herrn Prof. Dr. Robert Denk (Universität Konstanz) am 28.06.2022 - 14:30 Uhr im Rahmen des Forschungsseminars Analysis


Im Rahmen des Forschungsseminars Analysis hält am Dienstag, den 28. Juni 2022, um 14:30 Uhr,

Herr Prof. Dr. Robert Denk (Universität Konstanz)

einen Vortrag zum Thema

Nonlinear semigroups and $\Gamma$-convergence

Abstract: Motivated by model uncertainty and stochastic optimal control problems, we develop a general theory of nonlinear semigroups in spaces of continuous functions. In contrast to the linear theory, the domain of the generator is in general not invariant under the semigroup. Therefore, we replace the domain by a larger Lipschitz set and the norm convergence by $\Gamma$-convergence. We obtain invariance of the Lipschitz set, a comparison principle for nonlinear semigroups, and results on approximation by smooth functions. The applications include fully nonlinear partial differential equations arising from parameter uncertainty and Wasserstein perturbations of transition and heat semigroups.

This talk is based on joint work with Jonas Blessing, Michael Kupper (both Konstanz), and Max Nendel (Bielefeld).

Der Vortrag findet im Rahmen eines Zoom-Meetings statt. Bei Interesse an den Zugangsdaten bitte bei Herrn Prof. Mugnolo (delio.mugnolo@fernuni-hagen.de) melden.

mathinf.webteam | 01.06.2022