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TZID:America/Chicago
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DTSTART:20191103T020000
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DTSTART:20200308T020000
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UID:calendar.24053.field_event_date_2.0@math.wustl.edu
CREATED:20200109T164634Z
DESCRIPTION:Abstract: Arithmetic groups are an important class of lattices
in Lie groups which are of interest from a dynamical\, geometric\, and num
ber theoretic perspective. These groups were characterized among lattices
in a purely intrinsically algebraic way\, by a famous result of Margulis.
I will survey some of the ideas surrounding arithmetic groups and Margulis
' theorem\, and then move on to a discussion of thin groups. Thin groups a
re certain discrete subgroups of Lie groups which occur naturally in many
contexts in mathematics\, from number theory and spectral theory to quantu
m computing. Thin groups have much less structure than lattices\, though t
hey seem to follow some organizational principles analogous to Margulis' t
heorem. I will survey some recent results in this direction.\n\nHost: Mich
ael Landry
DTSTART;TZID=America/Chicago:20200117T160000
DTEND;TZID=America/Chicago:20200117T170000
LAST-MODIFIED:20200109T164634Z
SUMMARY:Geometry and Topology Seminar: 'Arithmetic groups\, thin groups\, a
nd commensurators'
URL;TYPE=URI:https://math.wustl.edu/events/geometry-and-topology-seminar-ar
ithmetic-groups-thin-groups-and-commensurators
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