This page list all events and seminars that take place in the department this week. Please use the form below to choose a different week or date range.

Colloquium

First-order logic on the free group and geometry

Dec 6, 14:30-15:30, 2016, Math -101

Speaker

Chloé Perin (Hebrew University of Jerusalem)

Abstract

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

The Derived Category of Sheaves of Commutative DG Rings

Dec 7, 15:10-16:30, 2016, Math -101

Speaker

Amnon Yekutieli (BGU)

Geometry and Group Theory

Geometric Property (T)

Dec 4, 14:30-15:30, 2016, -101

Speaker

Kyle Austin (BGU)

Abstract

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)

The geometry of locally infinite graphs

Dec 6, 10:50-12:00, 2016, Math -101

Speaker

Sebastien Martineau (Weizmann)


Other Dates