Introduction to bounded cohomology
Anton Hase (Ben-Gurion University)
Thursday, November 18, 2021, 11:10 – 12:00, Building 34, room 14
Please Note the Unusual Place!
While there are earlier works on bounded cohomology, the topic was popularized by Gromov in 1982. In this introductory talk, we will give definitions of bounded cohomology of discrete groups with trivial coefficients. We will interpret bounded cohomology in low degrees in terms of quasimorphisms and central extensions. Then we will mention a few examples of how bounded cohomology has proved useful in applications, before concentrating on the classification of circle actions