Geometry of approximate subgroups

Abstract: In this lecture, which is independent of the first two ones, we will explain some of the more geometric aspects of approximate subgroups related to geometric group theory, measure equivalence and bounded cohomology. A key player in this game is a certain ample groupoid constructed from the local patterns of the underlying point set.

This is based on joint works with Björklund, Cordes, Sarti and Tonić.

algebraic topologydifferential geometrydynamical systemsgroup theorygeometric topologysymplectic geometry

Audience: researchers in the topic

Geometry and topology online

Series comments: You can also find up-to-date information on the seminar homepage - warwick.ac.uk/fac/sci/maths/research/events/seminars/areas/geomtop/

The talks start at 13:30. Talks are typically fifty minutes long, with ten minutes for questions.