Events for 09/18/2019 from all calendars
Quantum Symmetries Seminar
Time: 11:00AM - 12:00PM
Location: BLOC 111
Speaker: Adam Deaton, Texas A&M University
Title: Exercise 3
Student Working Seminar in Groups and Dynamics
Time: 1:00PM - 2:00PM
Location: BLOC 628
Speaker: Krzysztof Święcicki
Title: 3-Manifolds
Abstract: In his celebrated work from 2003, Perelman finished the proof of Poincare conjecture in dimension 3. His result is in fact far stronger and implies Thurston's geometrization conjecture, which classifies possible geometric structures on 3 manifolds. I'll give an overview of the result and introduce all eight basic geometries and their connection to group theory. I won't assume any knowledge outside of basic topology, so any newcomers are welcome.
Groups and Dynamics Seminar
Time: 3:00PM - 4:00PM
Location: BLOC 220
Speaker: Misha Lyubich, Stonybrook
Title: Quasisymmetries of Julia sets
Abstract: We will describe the group of quasisymmetric self-homeomorphisms of some Julia sets J. The answer depends substantially on the Julia set in question. For instance, for a ``Sierpinski carpet" J, this group turns out to be finite, for the ``basilica" J it is an uncountably infinite group containing the circle Thompson group, while for an ``Apollonian gasket" J, it is countably infinite. Based on joint results with M. Bonk, R. Lodge, S. Merenkov, and S. Mukherjee.
Committee P Meeting
Time: 4:00PM - 5:00PM
Location: BLOC 220
Speaker: Committee P Meeting, Texas A&M University
Graduate Student Organization Seminar
Time: 4:00PM - 5:00PM
Location: BLOC 628
Speaker: Petr Naryshkin
Title: Concentration and entire solutions to $\Delta u - u + u^3 = 0$ with various symmetries
Abstract: We introduce the notion of concentration and outline the proof of the Concentration theorem for the given variational problem. We use it to show the existence of families of entire solutions to the equation $\Delta u - u + u^3 = 0$ in $\mathbb{R}^2$ with various symmetries. We finish by extending our results to more general equations in arbitrary dimension.