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UID:20260901T055233EDT-6554jOolWL@132.216.98.100
DTSTAMP:20260901T095233Z
DESCRIPTION:Title: Reflection groups beyond Coxeter groups.\n\nAbstract: Al
 l Coxeter groups are reflection groups. And there are many contexts where 
 'reflection group' and 'Coxeter group' mean essentially the same thing. In
  this talk I will\n\nhighlight a case where these notions are different. C
 oncretely\, a discrete group generated by finitely many reflections preser
 ving a non-singular quadratic form on a real metric vector space\n\nneed n
 ot be a Coxeter group.\n\nNote that there will not be teatime in the loung
 e at 4pm after Jon's talk due to the McGill departmental potluck from 4:30
 pm-6:30pm in the lounge. We will go for dinner with Jon after the talk. Pl
 ease email Piotr (piotr.przytycki [at] mcgill.ca) if you are interested in
  joining for dinner.\n
DTSTART:20251210T200000Z
DTEND:20251210T210000Z
LOCATION:Room 1104\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue
  Sherbrooke Ouest
SUMMARY:Jon McCammond (UC Santa Barbara)
URL:https://www.mcgill.ca/mathstat/channels/event/jon-mccammond-uc-santa-ba
 rbara-369662
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