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SUMMARY:Anne Lonjou (Paris-Saclay)
DTSTART:20210610T090000Z
DTEND:20210610T100000Z
DTSTAMP:20260423T005803Z
UID:notts_ag/63
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/notts_ag/63/
 ">Action of Cremona groups on CAT(0) cube complexes</a>\nby Anne Lonjou (P
 aris-Saclay) as part of Online Nottingham algebraic geometry seminar\n\n\n
 Abstract\nA key tool to study the plane Cremona group is its action on a h
 yperbolic space. Sadly\, in higher rank such an action is not available. R
 ecently\, in geometric group theory\, actions on CAT(0) cube complexes tur
 ned out to be a powerful tool to study a large class of groups. In this ta
 lk\, based on a common work with Christian Urech\, we will construct such 
 complexes on which Cremona groups of rank n act. Then\, we will see which 
 kind of results on these groups we can obtain.\n
LOCATION:https://researchseminars.org/talk/notts_ag/63/
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