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UID:20250724T022121EDT-4539ndxtPI@132.216.98.100
DTSTAMP:20250724T062121Z
DESCRIPTION:\n	\n		\n			\n				TITRE / TITLE\n					Trees\, fixed-points and the Cremona gro
 up\n					\n					RÉSUMÉ / ABSTRACT\n\n				An action of a group on a space is called decen
 t if every finitely generated subgroup all of whose elements have fixed-po
 ints has a global fixed-point. An example is the automorphism group of a t
 ree or a finite product of trees. I will give a sufficient condition for a
  group acting on a restricted infinite product of trees to be decent. This
  allows to prove that every finitely generated subgroup of the Cremona gro
 up of P^2 all of whose elements are algebraic is bounded. Joint work with 
 Anne Lonjou and Christian Urech.\n\n				 \n			\n		\n	\n\n
DTSTART:20231031T160000Z
DTEND:20231031T160000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Piotr Przytycki (9IÖÆ×÷³§Ãâ·Ñ)
URL:/mathstat/channels/event/piotr-przytycki-mcgill-un
 iversity-352383
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