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SUMMARY:Profiniteness of higher rank volume [Geometric Group Theory Oberse
 minar]
DTSTART:20260128T100000Z
DTEND:20260128T110000Z
DTSTAMP:20260314T233200Z
UID:indico-event-680@math-events.uni-bonn.de
DESCRIPTION:Speakers: Holger Kammeyer\n\nWhile many properties such as ame
 nability\, property (T) and FA\, finiteness properties\, Euler characteris
 tic\, ... can differ for profinitely isomorphic groups\, we present a resu
 lt in the positive direction: The covolume of lattices in higher rank Lie 
 groups with the congruence subgroup property is determined by the profinit
 e completion. Without relying on CSP\, we additionally show that volume is
  a profinite invariant of octonionic hyperbolic congruence manifolds. Join
 t work with Steffen Kionke and Ralf Köhl.\n\nhttps://math-events.uni-bonn
 .de/event/680/
LOCATION:Endenicher Allee 60/0-008 (Mathezentrum)
URL:https://math-events.uni-bonn.de/event/680/
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