Current Topics Seminar


Speaker Christopher Hoffman
Title Existence of things we cannot see
Date January 15 4:00pm PDL C-36
The probabilistic method allows us to show the existence of objects where constructive method have not been successful. We do this by putting a measure on a set. Then we use probabilistic techniques to show that the subset of objects that has a desired property has positive measure. Thus this subset is nonempty. We will give a few examples of this. Then we will put a family of measures on the set of two dimensional simplicial complexes with n vertices. We are interested in the fundamental group of a "typical" simplicial complex. We will explain how this may be related to a conjecture in geometric group theory.