Aitor Iribar López (ETH Zürich)
Cohomology of the Satake compactification II
13:30 • ETH Zentrum, Rämistrasse 101, Zürich, Building HG, Room G 43
Joris von Winden (TU Delft)
Synchronization by noise for traveling pulses abstract
Abstract:
We show synchronization by noise for stochastic partial differential equations which support traveling pulse solutions, such as the FitzHugh-Nagumo equation. We show that any two pulse-like solutions which start from different positions but are forced by the same realization of a multiplicative noise, converge to each other in probability on an appropriate time scale in the joint limit of small noise and long time. The noise is assumed to be Gaussian, white in time, colored and periodic in space, and non-degenerate only in the lowest Fourier mode. This is joint work with Christian Kuehn (TU Munich).
15:00 • EPF Lausanne, Bernoulli Center
Alan Reid (Rice)
Profinite rigidity, low-dimensional topology and Grothendieck Pairs abstract
Abstract:
The set of finite quotients of a finitely generated group is neatly captured by its profinite completion. A finitely generated (residually finite) group G is called profinitely rigid if whenever another finitely generated (residually finite) group H has isomorphic profinite completion, then H is isomorphic to G. This talk will discuss recent progress on groups that are (are not) profinitely rigid, and in particular describe a construction (Grothendieck Pairs) that produce a finitely presented group that is rigid amongst finitely presented groups, but not amongst finitely generated ones. An emphasis will be placed on the central role that 3-manifold groups play.
15:30 • ETH Zentrum, Rämistrasse 101, Zürich, Building HG, Room G 43
Prof. Dr. Gaultier Lambert (KTH Royal Institute of Technology)
Title T.B.A.
17:15 • ETH Zentrum, Rämistrasse 101, Zürich, Building HG, Room G 43