BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.cam.ac.uk//v3//EN
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:Junior Algebra/Logic/Number Theory seminar
SUMMARY:Towards a Hecke algebra for fundamental groups of
graphs of groups - Richard Freeland\, Univserity o
f Cambridge
DTSTART;TZID=Europe/London:20180316T150000
DTEND;TZID=Europe/London:20180316T160000
UID:TALK100516AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/100516
DESCRIPTION:A Hecke algebra H is an important tool in represen
tation theory of group algebras kG. Many different
objects are called Hecke algebras\, but they are
often endomorphism algebras of some kG module V\,
and so allow you to study representations of the g
roup G by looking at V as an H-kG bimodule. In thi
s talk\, I will give an overview of some of the wa
ys to define Hecke algebras. I'll then discuss how
well they apply to certain infinite groups given
by actions on trees. This will consider a couple o
f generalizations of Serre's groups of tree automo
rphisms that involve almost automorphisms in the s
tyle of Thompson's group V.\nThis talk is work in
progress and aims to explain the classical theory
clearly rather than present new results.
LOCATION:CMS\, MR14
CONTACT:Nicolas DuprÃ©
END:VEVENT
END:VCALENDAR