Groups and Operator Algebras Seminar

Speaker: Yash Lodha (University of Hawaiʻi)

Title: An algebraic criterion for the vanishing of bounded cohomology.

Abstract: Bounded cohomology of groups was defined in the 1970s by Johnson and Trauber, and has emerged as an area with several connections to classical topics in group theory and topology. I will provide a gentle introduction to this topic, and describe some connections with notions such as amenability and stable commutator length. I will then describe a new algebraic criterion for the vanishing of bounded cohomology (for a certain large class of coefficients) which is recent joint with Campagnolo, Fournier-Facio, and Moraschini.

GOA website: https://sites.google.com/view/copenhagen-goa-seminar