Colloquium abstracts

Radhika Gupta
Temple University, USA
July 15, 2021

From buildings to factor complex:  We will consider three families of groups - arithmetic groups, mapping class groups and groups of outer automorphisms of a free group. The study of arithmetic groups has had a profound influence on how we understand the latter two classes of groups. In this talk, we will specifically draw parallels between the associated simplicial complexes - Tits building, curve complex and free factor complex - from a topological point of view.