| 07/2026, TU Darmstadt, Deutschland | Vortrag: A Positivity-Preserving Relaxation Algorithm |
| 03/2026, Brown Universität, Providence, Rhode Island (USA) | Vortrag: A Recent Approach for a Positivity-Preserving Relaxation Technique |
| 04/2025, Institute National de Recherche en Informatique et en Automatique (INRIA), Bordeaux, Frankreich | Vortrag: Unconditionally Positivity-Preserving Time Integrators: A Survey and Applications |
| 05/2024, Johannes Gutenberg-Universität, Mainz, Deutschland | Vortrag: Using Bayesian Optimization to Design Time Step Size Controllers |
| 03/2024, Universität Wuppertal, Deutschland | Vortrag: A Unifying Theory for Runge–Kutta-like Methods: Convergence and Stability |
| 12/2023, Universidad de la Frontera, Chile | Vortrag: A Unifying Theory for Runge–Kutta-like Methods |
| 02/2023, King Abdullah University of Science and Technology (KAUST), Saudi-Arabien | Vortrag: Introduction to Patankar-Type Schemes |
| 10/2022, RWTH Aachen, Deutschland | Vortrag: Positivity-Preserving Schemes and their Local Stability Properties |
| 09/2022, DLR Göttingen, Deutschland | Vortrag: Modified Patankar–Runge–Kutta Methods: Order Conditions and Stability |
| 06/2022, Universität Dortmund, Deutschland | Vortrag An Introduction to the Stability of Positivity-Preserving Schemes |
| 06/2022, Lothar-Collatz Seminar, Universität Hamburg, Deutschland | Vortrag: Positivity-Preserving Schemes: A Survey on Stability |
| 03/2022, Brown Universität, Providence, Rhode Island (USA) | Vortrag: Positivity-Preserving Schemes: Accuracy, Stability and Applications |
| 09/2021, Aldo-Moro-Universität Bari, Italien | Vortrag: Recent Results on Stability of Modified Patankar-Runge-Kutta schemes |
| 01/2021, Universität Halle, Deutschland | Vortrag: Lyapunov Stability of Positive and Conservative Numerical Schemes in 2D |
