Upcoming Events
- Thursday, 12.03.2026, 10:00 (WIAS-406)
- Software and Data Seminar
Dr. Maximilian Reiter:
Numerical approximation of geometrically constrained PDEs in FEniCSx
more ... Location
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Abstract
In modeling liquid crystals and micromagnetics, holonomic constraints on the relevant physical quantities are common. This talk discusses efficient numerical approximation methods for partial differential equations discretized in time by finite differences and in space by finite elements, using the Python library FEniCSx.
Further Informations
Software and Data Seminar
Host
WIAS Berlin
- Thursday, 12.03.2026, 14:00 (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
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Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Abstract
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.
Further Informations
Seminar Materialmodellierung
Host
WIAS Berlin
- March 16 – 18, 2026 (WIAS-ESH)
- Workshop/Konferenz: Workshop Optimal Transport and Noise: OT Meets (S)PDEs
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Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Host
Technische Universität Berlin
WIAS Berlin
- Wednesday, 15.04.2026, 11:30 (WIAS-406)
- Seminar Interacting Random Systems
Willem van Zuijlen, WIAS Berlin:
tba
more ... Location
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Abstract
tba
Further Informations
Seminar Interactin Random Systems
Host
WIAS Berlin
- Wednesday, 15.04.2026, 14:15 (WIAS-ESH)
- Berliner Oberseminar „Nichtlineare partielle Differentialgleichungen” (Langenbach-Seminar)
Prof. Dr. Pierluigi Colli, Università di Pavia, Italien:
Well-posedness and optimal velocity control of a Brinkman--Cahn--Hilliard system with curvature effects
more ... Location
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Abstract
Diffuse-interface models for multiphase flows have attracted considerable interest due to their ability to describe complex interfacial dynamics, including curvature effects, within a unified and energetically consistent framework. In this talk, we present joint results for a Brinkman--Cahn--Hilliard system coupling a sixth-order phase-field evolution with a Brinkman-type momentum equation with variable shear viscosity. The Cahn--Hilliard equation includes a nonconservative source term modeling mass exchange, while the momentum equation involves a forcing term that is not divergence-free. We prove the existence of weak solutions in a divergence-free variational framework and, in the case of constant mobility and shear viscosity, establish uniqueness and continuous dependence on the forcing. We also analyze the Darcy limit and obtain existence results for the corresponding reduced system. Finally, we consider an optimal control problem with distributed velocity control, prove the existence of optimal controls, show the Fréchet differentiability of the control-to-state operator, and derive first-order necessary optimality conditions via an adjoint system.
Further Informations
Oberseminar “Nichtlineare partielle Differentialgleichungen” (Langenbach-Seminar)
Host
Humboldt-Universität zu Berlin
WIAS Berlin
- Thursday, 23.04.2026, 10:00 (WIAS-ESH)
- Forschungsseminar Mathematische Modelle der Photonik
Lasse Ermoneit, WIAS Berlin:
Epitaxial profile optimization in Si/SiGe heterostructures: Engineering valley splitting for spin qubits
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Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Further Informations
Forschungsseminar Mathematische Modelle der Photonik
Host
WIAS Berlin
- Wednesday, 27.05.2026, 11:30 (WIAS-406)
- Seminar Interacting Random Systems
David Dereudre, University of Lille:
tba
more ... Location
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, 4. Etage, Weierstraß-Hörsaal (Raum: 406)
Abstract
tba
Further Informations
Seminar Interactin Random Systems
Host
WIAS Berlin
- June 1 – 5, 2026 (WIAS-ESH)
- Workshop/Konferenz: ESGI 194 - The Berlin Study Group with Industry
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Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Host
WIAS Berlin
- July 6 – 8, 2026 (WIAS-ESH)
- Workshop/Konferenz: Spreading Dynamics in Random Environment
more ... Location
Weierstraß-Institut, Anton-Wilhelm-Amo-Str. 39, 10117 Berlin, Erdgeschoss, Erhard-Schmidt-Hörsaal
Host
WIAS Berlin