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UID:20260622T005826EDT-6549G8UFl0@132.216.98.100
DTSTAMP:20260622T045826Z
DESCRIPTION:Title: The Tits alternative for two-dimensional Artin groups.\n
 \nAbstract: A group is said to satisfy the Tits Alternative if its finitel
 y generated subgroups exhibit a striking dichotomy: they are either 'very 
 large' (they contain a non-abelian free subgroup) or 'very small' (they ar
 e virtually soluble). Many groups of geometric interest have been shown to
  satisfy the Tits Alternative: linear groups\, mapping class groups of hyp
 erbolic surfaces\, etc. In this talk\, I will explain how one can use idea
 s from group actions in negative curvature to prove such a dichotomy. In p
 articular\, I will show how one can prove a strengthening of the Tits Alte
 rnative for a large class of Artin groups. This is joint work with Piotr P
 rzytycki.\n
DTSTART:20190320T190000Z
DTEND:20190320T200000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Alexandre Martin (Heriot-Watt University)
URL:/mathstat/channels/event/alexandre-martin-heriot-w
 att-university-295469
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