Date: 11 nov '07, at 12 noon
Speaker: Dr. Uri Bader, University of Chicago and The Technion
TITLE: Boundary Theory for Groups
ABSTRACT: A fruitful idea in (infinite) group theory is to associate a "boundary" to a group, which reflects its "behaviour at infinity". This idea is no orphan. Mother idea: Regard a Group as a Geometric Object. Father idea: Attach to a Geometric Object a Boundary. In my talk I will survey this family of ideas, and try to convince that having a boundary is for the group's own good (unless it is amenable), and convenient to group theorists too.