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UID:20250723T152248EDT-2902v0j5zG@132.216.98.100
DTSTAMP:20250723T192248Z
DESCRIPTION:Title: The dynamics of free group endomorphisms\n\nAbstract: Gi
 ven an injective endomorphism of a free group\, what is the 'best' way to 
 represent it so as to read off its dynamical properties? Using Stallings g
 raphs\, I'll describe an answer to this question for nonsurjective endomor
 phisms. To some degree\, it turns out nonsurjectivity greatly simplifies m
 atters --- a result that I found rather surprising! I proved that all inje
 ctive endomorphisms can be uniquely represented by certain kinds of expand
 ing immersions on graphs\; a bit paradoxically\, this representation is tr
 ivial when the endomorphism is an automorphism.\n\nJean Pierre's talk will
  be followed by teatime in the lounge at 5pm.\n\nIn addition\, there will 
 be a very interesting group theory related talk at the Quebec Mathematics 
 Colloquium given by Su Gao (Nankai University) this Thursday at 2:30pm in 
 BURN 920. See here for the title and abstract.\n\n \n
DTSTART:20240925T200000Z
DTEND:20240925T210000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Jean-Pierre Mutanguha (ºÚÁϲ»´òìÈ University). 
URL:/mathstat/channels/event/jean-pierre-mutanguha-mcg
 ill-university-359872
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