Activities This Week
Dec 6, 14:30-15:30, 2016, Math -101
Chloé Perin (Hebrew University of Jerusalem)
We will give an overview of questions one might ask about the first-order theory of free groups and related groups: how much information can first-order formulas convey about these groups or their elements, what algebraic interpretation can be given for model theoretic notions such as forking independence, etc. It turns out that techniques from geometric group theory are very useful to tackle such problems. Some of these questions have been answered, others are still open - our aim is to give a feel for the techniques and directions of this field. We will assume no special knowledge of model theory.
Algebraic Geometry and Number Theory
Dec 7, 15:10-16:30, 2016, Math -101
Amnon Yekutieli (BGU)
Geometry and Group Theory
Dec 4, 14:30-15:30, 2016, -101
Kyle Austin (BGU)
One way of viewing coarse geometry is that it is the perfect tool for treating metric spaces like groups and doing representation theoretic/harmonic analytical techniques in a much larger setting. R. Willett and G. Yu define a property (T) for coarse spaces using the uniform Roe algebra. In this talk, I plan to define coarse spaces and show that the uniform Roe algebra is nice tool that acts like the group C* algebra. I will define geometric property (T) and discuss some of its properties.
Probability and ergodic theory (PET)
Dec 6, 10:50-12:00, 2016, Math -101
Sebastien Martineau (Weizmann)