Juni 2014 – Februar 2018

Jun
11
Mi
Uwe Franz (Besancon/Greifswald): Levy-Prozesse auf Gruppen, Quantengruppen und dualen Gruppen
Jun 11 @ 13:30 – 14:30

Vortrag im Rahmen des Seminars “Algebra und Geometrie”

Feb
19
Mo
Conference: TAGS – Linking Topology to Algebraic Geometry and Statistics (day 1)
Feb 19 @ 08:30 – 17:00

More information you can find on the conference homepage:

https://www.mis.mpg.de/calendar/conferences/2018/tags2018/index.html

Isabell Vorkastner (TU Berlin): Connectedness of random set attractors
Feb 19 @ 11:00 – 12:30

Vortrag in der Reihe: Arbeitsgemeinschaft ANGEWANDTE ANALYSIS
Topological properties of random attractors are essential to understand the asymptotic behavior of random dynamical systems. In the deterministic case, set attractors of continuous-time systems are known to be connected. In the probabilistic setup, however, connectedness has only been shown under stronger connectedness assumptions on the state space.
We prove that random attractors of continuous-time systems, which attract compact sets almost surely, are connected. Moreover, we present an example where compact sets converge to the attractor in probability and the attractor is not connected.
This is joint work with M. Scheutzow.

Masud Ehsani (MPI MIS, Leipzig): Fundamental principles of Statistical Mechanics II: Boltzmann Distribution
Feb 19 @ 14:00 – 15:30
Feb
20
Di
Conference: TAGS – Linking Topology to Algebraic Geometry and Statistics (day 2)
Feb 20 @ 08:30 – 17:30

More information you can find on the conference homepage:

https://www.mis.mpg.de/calendar/conferences/2018/tags2018/index.html

Herbert Koch, (Universität Bonn): to be announced
Feb 20 @ 15:15 – 16:45

Vortrag in der Reihe: Oberseminar ANALYSIS – PROBABILITY

Radu Ignat (Université Paul Sabatier, Toulouse): A DeGiorgi type conjecture for minimal solutions to a nonlinear Stokes equation
Feb 20 @ 15:15 – 16:45

Vortrag in der Reihe: Oberseminar ANALYSIS – PROBABILITY
The aim is to study the symmetry of transition layers in Ginzburg-Landau type functionals for divergence-free maps in R^N. Namely, we determine a class of nonlinear potentials such that the minimal transition layers are one-dimensional.
In particular, this class includes in dimension N=2 the nonlinearities w^2 with w being an harmonic function or a solution to the wave equation, while in dimension N>2, this class contains a perturbation of the standard Ginzburg-Landau potential as well as potentials having N+1 wells with prescribed transition cost between the wells. For that, we develop a theory of calibrations for divergence-free maps in R^N(similar to the theory of entropies for the Aviles-Giga model when N=2).
This is a joint work with Antonin Monteil (Louvain, Belgium).

Julian Fischer (IST Austria): The choice of representative volumes for random materials
Feb 20 @ 16:45 – 18:15

Vortrag in der Reihe: Oberseminar ANALYSIS – PROBABILITY
The most widely employed method for determining the effective large-scale properties of random materials is the representative volume element (RVE) method: It basically proceeds by choosing a sample of the random medium – the representative volume element – and computing its effective properties. To obtain an accurate approximation for the effective material properties, the RVE should reflect the statistical properties of the material well. Hence, it is desirable to choose a large sample of the random medium as an RVE. However, an increased size of the RVE comes with an increased computation cost. For this reason, there have been attempts in material science and mechanics towards capturing the statistical properties of the material in a better way in an RVE of a fixed size. We provide an analysis of an approach by Le Bris, Legoll, and Minvielle, which has been capable of improving the computational efficiency by a factor of 10-50 in some numerical examples by such an ansatz.

Feb
21
Mi
Conference: TAGS – Linking Topology to Algebraic Geometry and Statistics (day 3)
Feb 21 @ 09:00 – 19:00

More information you can find on the conference homepage:

https://www.mis.mpg.de/calendar/conferences/2018/tags2018/index.html

Feb
22
Do
Conference: TAGS – Linking Topology to Algebraic Geometry and Statistics (day 4)
Feb 22 @ 08:30 – 17:30

More information you can find on the conference homepage:

https://www.mis.mpg.de/calendar/conferences/2018/tags2018/index.html

Letzte Änderung: 15. Mai 2013