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UID:20251008T145140EDT-3867DoLX37@132.216.98.100
DTSTAMP:20251008T185140Z
DESCRIPTION:Title: Subgroups arising from connected components in the Morse
  boundary.\n\nAbstract: Every finitely generated group G has an associated
  topological space\, called a Morse boundary\, that captures the hyperboli
 c-like behavior of G at infinity. It was introduced by Cordes generalizing
  the contracting boundary invented by Charney-Sultan. In this talk\, we st
 udy connected components of Morse boundaries. We introduce the notion of p
 oint-convergence and show that if the set of non-singleton connected compo
 nents of the Morse boundary of a finitely generated group G is point-conve
 rgent\, then every non-singleton connected component is the (relative) Mor
 se boundary of its stabiliser. The above property only depends on the topo
 logy of the Morse boundary and hence is invariant under quasi-isometry. Th
 is shows that the Morse boundary can be used to detect certain subgroups w
 hich in some sense are invariant under quasi-isometry. This is joint work 
 with Bobby Miraftab and Stefanie Zbinden.\n\nAfter the talk\, there will b
 e board games in the lounge and then we will go for dinner.\n\n \n
DTSTART:20240313T190000Z
DTEND:20240313T200000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Annette Karrer (Ohio State University)
URL:/mathstat/channels/event/annette-karrer-ohio-state
 -university-355992
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