Newsarchiv: Oberseminar

24. Januar 2022

Thomas Izgin (Kassel)

"On stability of Patankar-RK methods"

11. Januar 2021

• Rico Weiske
• Erik Schwob

30. November

Denise Tumiotto

16. November 2021 (Präsenz und virtuell)

Levin Rug (MLU Halle & TROPOS)
"Large Chemical Kinetic Systems and Machine Learning"

2. November 2021

1) Helmut Podhaisky (mit Raphael Kruse):

"On randomized implicit Runge--Kutta methods"

2) Tom Weber präsentiert Ergebnisse seiner Bachelorarbeit zum Thema "Simulation und Analyse von Turing-Mustern im Gray-Scott Modell" (online)

13. Juli 2021 (virtuell)

Nahid Jamshidi

"Model reduction for unstable stochastic systems"

6. Juli 2021 (Der Vortrag findet im HS 3.28 statt und wird auch gestreamt.)

Rico Weiske

"The BDF2-Maruyama Scheme for Stochastic Evolution Equations with Monotone Non-Lipschitz Drift"

22. Juni 2021 (Der Vortrag findet im SR 2 statt und wird mit Zoom gestreamt.)

Philipp Reiter (TU Chemnitz)

"Sobolev Gradients for the Möbius Energy (joint work with Henrik Schumacher)"

The Möbius energy is a self-avoiding functional on curves that was originally studied to produce nicely shaped knots. Aiming at completely unraveling cable spaghetti, we use a gradient-based approach to approximate stationary points.

The gradients are computed with respect to Sobolev inner products similar to the W^{3/2,2}-inner product. This leads to optimization methods that are significantly more efficient and robust than standard techniques based on L^2-gradients.

11. Mai 2021 (virtuell)

Monika Eisenmann (Lund TH)

"Sub-linear convergence of stochastic optimization methods in Hilbert space"

4. Mai 2021 (virtuell)

Raphael Kruse, Helmut Podhaisky

"On implicit random Runge-Kutta methods"

20. April 2021

Gesa Sarnighausen (virtuell)

"Identifikation von Lösungen nichtglatter Systeme mittels neuronaler Netze"

14. Dezember 2021

Vinh Quang Luu

"Multivariate Polynomial Interpolation in Newton Forms"