BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Groups Acting Acylindrically on Trees - Will Cohen\, University of
  Cambridge
DTSTART:20230203T160000Z
DTEND:20230203T170000Z
UID:TALK183884@talks.cam.ac.uk
CONTACT:Macarena Arenas
DESCRIPTION:Hyperbolic groups are a class of groups that are very well und
 erstood by geometric group theorists\, but they come with some annoying pr
 oblems. For example\, many nice groups that feel as though they should be 
 negatively curved fail to be hyperbolic\, for example the mapping class gr
 oups of hyperbolic surfaces. For this reason we now have a few ways to gen
 eralise the class of hyperbolic groups to allow them to include some of th
 ese examples.\n\nOne such generalisation is Acylindrical hyperbolicity\, w
 hich can be shown to be the class of groups that act in a particular way o
 n metric spaces quasi-isometric to trees. In this talk I will define this 
 concept\, and discuss the problem of restricting this definition to only i
 nclude actions on trees themselves.
LOCATION:MR13
END:VEVENT
END:VCALENDAR