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Profinite properties of lattices in Lie groups
6.2.2020, 14:15 - 15:45
Speaker:Holger Kammeyer, Karlsruher Institut für Technologie
Location:Mathematisches Institut, Bunsenstr 3-5SitzungszimmerGras Geo Map
Organizer:Fakultät für Mathematik und Informatik
Which invariants of a group are profinite in the sense that they are
already determined by the set of the finite quotient groups? This
question has gained a lot of attention in recent years and it is
particularly intriguing for discrete subgroups of semisimple Lie groups
with cofinite Haar measure. In this talk, we will report on recent
progress in the field with a special view towards L²-cohomological
invariants. We will see that some of these invariants are profinite
while others are not and we will draw geometric conclusions on the
Euler characteristic of the associated locally symmetric spaces.
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Host:Prof. Dr. Thomas Schick
Contact:Linda Cassel0551/
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