60 https://www.uni-bremen.de/dynamical-systems/seminars/older-seminar-talks Seminar DSG de Universität Bremen Sun, 08 Mar 2026 15:04:23 +0100 Sun, 08 Mar 2026 15:04:23 +0100 Universität Bremen content-471988 Tue, 08 Nov 2022 12:10:44 +0100 https://www.uni-bremen.de/dynamical-systems/seminars/older-seminar-talks#c471988 <table> <tbody> <tr> <td>28.02.2019  University of Oldenburg</td> <td> <p>Boris Vertman (Oldenburg)</p> </td> <td> <p><a href="file:///Z:/stochdyn/_" title="We discuss the question of asymptotics for determinants of discrete Laplacians under refinement of the discretization mesh. This is an open question and we address its solution in the special case of tori. This is joint work with Matthias Lesch.">Discrete determinants and regularized integrals</a></p> </td> </tr> <tr> <td> </td> <td>Marc Keßeböhmer (Bremen)</td> <td> <p><a href="file:///Z:/stochdyn/_" title="We study dynamical systems with transient and recurrent behavior. With the help of the thermodynamical formalism we try to quantify its transient behavior in stochastic and geometric terms.">Characteristic exponents for recurrence and transience</a></p> </td> </tr> <tr> <td>24.01.2019  University of Bremen</td> <td> <p>Hannes Uecker (Oldenburg)</p> </td> <td> <p><a href="file:///Z:/stochdyn/_" title="We first briefly review the basic setup using the Allen-Cahn equation as a simple example, and then explain some more advanced features such as bifurcations of higher multiplicity, including some connections to geometry by considering problems of pattern formation on curved surfaces.">Introduction to pde2path (and some newer features).</a></p> </td> </tr> <tr> <td> </td> <td>Jens Rademacher (Bremen)</td> <td> <p><a href="file:///Z:/stochdyn/_" title="Sharp interfaces are perhaps the most fundamental pattern. In this talk, recent progress regarding one-dimensional interface models in the presence of strong scale separation is discussed. Here the interplay of dynamical systems theory and parabolic PDE can be made surprisingly explicit. This combines geometric singular perturbation theory, the Evans-function for stability analysis, center manifold reduction, normal form and singularity theory. This allows to detect and unfold degenerate Takens-Bodganov points for the interface dynamics, which features various periodic, homoclinic and heteroclinic solutions. The results are illustrated with numerical computations.">Dynamics of fronts in 1D Allen-Cahn equations with large scale coupling</a></p> </td> </tr> </tbody> </table> Content