Veranstaltungen
- Dienstag, 10.03.2026, 15:00 Uhr (WIAS-405-406)
- Seminar Modern Methods in Applied Stochastics and Nonparametric Statistics
Jakob Kellermann, WIAS Berlin:
Signature kernel ridge regression
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Raum: 405/406
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Dieser Vortrag findet auch via Zoom statt: https://wias-berlin-de.zoom-x.de/j/69982487566
Veranstalter
WIAS Berlin
- Mittwoch, 11.03.2026, 11:30 Uhr (WIAS-406)
- Seminar Interacting Random Systems
Anh Duc Vu, WIAS Berlin:
Generalised graphical representations
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Abstrakt
Numerous dynamic spatial models feature interactions between particles that are based on waiting times; the most prominent examples being first passage percolation, where a fluid spreads from a source, and the contact process, where an infection spreads on a graph with the possibility of recovery. However, waiting times are unnatural for certain models. One can argue that people have a daily routine and meet each other on a relatively fixed schedule, rather than a random waiting time after having met someone else. With the help of graphical representations, we develop a framework that moves away from waiting times towards so called contact times. As an application, we present results on a first contact percolation model, where people follow a random daily meeting routine, as well as contact processes with periodic recoveries.
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Seminar Interactin Random Systems
Veranstalter
WIAS Berlin
- Mittwoch, 11.03.2026, 14:15 Uhr (WIAS-ESH)
- Berliner Oberseminar „Nichtlineare partielle Differentialgleichungen” (Langenbach-Seminar)
Prof. Dr. Hannes Meinlschmidt, Friedrich-Alexander Universität Erlangen-Nürnberg:
Quasilinear parabolic equations in the Bessel scale
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Abstrakt
In this talk, I will discuss and analyze scalar quasilinear parabolic equations posed on nonsmooth domains with generally irregular input data. The latter refers to merely measurable and bounded coefficients, mixed boundary conditions, possibly inhomogeneous Robin or Neumann boundary data, and also to nonlinear forcing functions which may act on the gradient of the solution. The driving force for the analysis will be maximal parabolic regularity of the differential operators in the scale of (duals of) Bessel potential spaces incorporating mixed boundary conditions, with the scale parameter depending on the smoothness of the solution within the quasilinear operator. These depend on permanence principles for the elliptic counterparts which are leveraged from bilinear interpolation. A careful analysis allows to close the loop for the quasilinear equation and thus obtain local-in-time solutions under minimal assumptions. I further mention some sufficient criteria for solutions to exist globally, and how these can be leveraged in the framework of optimal control problems to achieve a satisfying theory for nonsmooth problems with strong nonlinearities.
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Oberseminar “Nichtlineare partielle Differentialgleichungen” (Langenbach-Seminar)
Veranstalter
Humboldt-Universität zu Berlin
WIAS Berlin
- Donnerstag, 12.03.2026, 14:00 Uhr (WIAS-ESH)
- Seminar Materialmodellierung
Dr. Argyrios Petras, Österreichische Akademie der Wissenschaft, Österreich:
Mathematical modeling of cardiac radiofrequency ablation: From patient-specific simulation to porous media tissue formulations
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Abstrakt
Cardiac radiofrequency ablation is a widely used therapy for the treatment of cardiac arrhythmias. In this talk, a mathematical and computational framework for modeling lesion formation based on coupled electrical conduction, heat transfer, and temperature-dependent tissue damage will be presented. Starting from simplified geometries, we introduce the governing PDE system and its numerical discretization, and then demonstrate its applications to patient-specific meshes derived from medical imaging. Finally, extensions toward reformulating cardiac tissue as a porous medium, enabling a more mechanistic representation of perfusion and transport processes will be discussed.
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Seminar Materialmodellierung
Veranstalter
WIAS Berlin
- 16. – 18. März 2026 (WIAS-ESH)
- Workshop/Konferenz: Workshop Optimal Transport and Noise: OT Meets (S)PDEs
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Veranstalter
Technische Universität Berlin
WIAS Berlin
- Mittwoch, 15.04.2026, 11:30 Uhr (WIAS-406)
- Seminar Interacting Random Systems
Willem van Zuijlen, WIAS Berlin:
tba
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Abstrakt
tba
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Seminar Interactin Random Systems
Veranstalter
WIAS Berlin
- Donnerstag, 23.04.2026, 10:00 Uhr (WIAS-ESH)
- Forschungsseminar Mathematische Modelle der Photonik
Lasse Ermoneit, WIAS Berlin:
Epitaxial profile optimization in Si/SiGe heterostructures: Engineering valley splitting for spin qubits
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
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Forschungsseminar Mathematische Modelle der Photonik
Veranstalter
WIAS Berlin
- Mittwoch, 27.05.2026, 11:30 Uhr (WIAS-406)
- Seminar Interacting Random Systems
David Dereudre, University of Lille:
tba
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Abstrakt
tba
Weitere Informationen
Seminar Interactin Random Systems
Veranstalter
WIAS Berlin
- 1. – 5. Juni 2026 (WIAS-ESH)
- Workshop/Konferenz: ESGI 194 - The Berlin Study Group with Industry
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Veranstalter
WIAS Berlin
- 6. – 8. Juli 2026 (WIAS-ESH)
- Workshop/Konferenz: Spreading Dynamics in Random Environment
mehr ... Veranstaltungsort
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Veranstalter
WIAS Berlin