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UID:20250707T141356EDT-6877ONbhNa@132.216.98.100
DTSTAMP:20250707T181356Z
DESCRIPTION:Title: Curvature of Shephard groups\n\nAbstract: Shephard group
 s are closely related to complex reflection groups and generalize Coxeter 
 groups and Artin groups. It is well known that Coxeter groups are CAT(0)\,
  and it is conjectured that Artin groups are CAT(0). But because their def
 inition is quite general\, there are Shephard groups which exhibit seeming
 ly pathological behavior\, at least in regards to curvature. We will focus
  on two such classes. The first is a class of CAT(0) Shephard groups which
  exhibit “Coxeter-like” behavior\, and strictly contains the Coxeter group
 s. The second class lies more squarely between the Artin and Coxeter group
 s\, and consists of groups which cannot be CAT(0). However\, they are rela
 tively and acylindrically hyperbolic. We will give some motivation as to w
 hy this behavior occurs and why it doesn’t contradict the conjectural non-
 positive curvature of Artin groups.\n\nWe will have teatime in the lounge 
 at 5pm after Katherine's talk.\n\n \n
DTSTART:20241002T200000Z
DTEND:20241002T210000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Katherine Goldman (���ϲ����� University)
URL:/channels/channels/event/katherine-goldman-mcgill-
 university-360163
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