Research Seminar
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Numerical Analysis
WiSe 2025/2026

Table of Contents


Organization [ back ]

Prof. Carsten Carstensen
Contact: Tim Stiebert (stiebert@math.hu-berlin.de)

The seminar talks usually take place on Tuesday at 13 c.t..

Location [ back ]

Humboldt-Universität zu Berlin, Institut für Mathematik
Rudower Chaussee 25, 12489 Berlin
House 2, Floor 4, Room 2.417

Schedule [ back ]

Date Time Talk by Title Room
14.10.2025 13:15 Carsten Carstensen
(HU Berlin) 		Keep it simple: an Introduction to appropriate mathematical writing in an example for inf-sup conditions (Part 1) 3.007
14.10.2025 17:30 Tim Stiebert
(HU Berlin) 		Newton-Kantorovich for unsymmetric PDE eigenvalue problems 2.417
15.10.2025 11:30 Carsten Carstensen
(HU Berlin) 		Keep it simple: an Introduction to appropriate mathematical writing in an example for inf-sup conditions (Part 2) 1.115
17. & 18.10.2025 Northern German Colloquium on Applied Analysis and Numerical Mathematics
21.10.2025 13:15 Christian Merdon
(WIAS Berlin) 		Refined stability estimates for mixed problems 3.007
28.10.2025 09:15 Tim Stiebert
(HU Berlin) 		Calculations around the Newton-Kantorovich theorem online
04.11.2025 13:15 Konstantin Viol
(HU Berlin) 		Implementation of the LSFEM for Indefinite Second Order elliptic PDE 2.417
11.11.2025 13:15 Stefan Sauter
(Uni Zürich) 		A non-linear diffusion problem 2.417
25.11.2025 13:15 Lara Théallier
(HU Berlin) 		Computation results for Ginzburg-Landau and Courant FEM 2.417
26.11.2025 11:15 Carsten Carstensen
(HU Berlin) 		Discrete Sobolev embeddings 2.006
02.12.2025 13:15 Shuo Yang
(HU Berlin) 		Computational results for the heat equation using the Crouzeix-Raviart element 2.417
09.12.2025 13:15 Julia Schaeffer
(HU Berlin) 		Contour integration methods for nonlinear eigenvalue problems in nanooptics 2.417
13.01.2026 13:15 Konstantin Viol
(HU Berlin) 		LSFEM for indefinite second-order elliptic PDE 2.417
20.01.2026 13:15 Falk Hante
(HU Berlin) 		Stabilizing PDE Control: Optimization and Feedback in Moving Horizons 2.417
27.01.2026 13:15 Nathan Arnaud
(HU Berlin) 		Crouzeix-Raviart FEM for the Poisson problem with singular data 2.417
27.01.2026 17:00 Carsten Carstensen
(HU Berlin) 		Comments on H̃-1/2(Γ) 2.417
28.01.2026 13:15 Tim Stiebert
(HU Berlin) 		Discussion on stability bounds for second-order PDE satisfying a Garding inequality 1.115

Abstracts [ back ]

Speaker: Stefan Sauter (Uni Zürich)
Title: A non-linear diffusion problem
In this talk we consider a non-linear diffusion problem with a non-local diffusion coefficient. We explain how to transform this problem to a fixed point problem in either the set of real numbers or a linear Poisson problem has to be solved in each iteration.

Archive [ back ]