Seminar series
Date
Wed, 05 Jun 2024
Time
16:00 -
17:00
Location
L6
Speaker
Ana Isaković
Organisation
University of Cambridge
In 2006, Jan Dymara introduced the concept of weighted \(\ell^2\) Betti numbers as a method of computing regular \(\ell^2\) Betti numbers of buildings. This notion of dimension is measured by using Hecke algebras associated to the relevant Coxeter groups. I will briefly introduce buildings and then give a comparison between the regular \(\ell^2\) Betti numbers and the weighted ones.