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UID:20260907T103158EDT-6076lBX4El@132.216.98.100
DTSTAMP:20260907T143158Z
DESCRIPTION:\n	\n		\n			\n				TITLE / TITRE\n					Graphs\, R-trees\, & what happens when y
 ou iterate a free group automorphism.\n					\n					ABSTRACT / RÉSUMÉ \n\n				One of the 
 most beautiful interplays in mathematics is between a deformation space an
 d its symmetry group. Let X be a combinatorial object (such as a graph) or
  a topological object (such as a surface). Suppose X admits some further s
 tructure (such as a metric) in a nonunique way. Then the possible choices 
 for the further structure are organized into a deformation space\, on whic
 h a suitable group of symmetries of X acts. For a surface\, this is the ma
 pping class group acting on Teichmuller space\, and for a graph\, this is 
 the free group outer automorphism group acting on Culler-Vogtmann Outer Sp
 ace. We discuss 2 different notions of 'typical R-trees' arising from auto
 morphisms of a free group and their action on Culler-Vogtmann Outer Space.
  Results presented are joint work with I. Kapovich\, J. Maher\, and S.J. T
 aylor.\n			\n		\n	\n\n
DTSTART:20231115T200000Z
DTEND:20231115T210000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Catherine Pfaff (Queen's University) CANCELED
URL:https://www.mcgill.ca/mathstat/channels/event/catherine-pfaff-queens-un
 iversity-canceled-352704
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