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 M3//EN
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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20241104T183956Z
DTSTART:20241111T140000Z
SUMMARY:Dynamical Systems and Analysis Seminar - Yongsheng Jia
UID:{http://www.columbasystems.com/customers/uom/gpp/eventid/}ksw-m1nyzgt
 d-l5pwlh
DESCRIPTION:Speaker: Yongsheng Jia (University of Manchester)\n\nTitle: Q
 uasimorphisms on the group of area-preserving homeomorphisms on S^2\n\nA
 bstract: In topological dynamics\, the group of orientation-preserving h
 omeomorphisms on the circle has been widely studied. Started by Poincare
 \, people tried to look at the rotation number\, which is a map from the
  group of orientation-preserving homeomorphisms on the circle to the rea
 l numbers. It is actually an example of a quasimorphism\, which is almos
 t a homomorphism (up to a uniformly bounded error). In this talk\, I wil
 l focus on how to construct quasimorphisms on the group of area-preservi
 ng homeomorphisms on S^2\, through a geometric group theoretical point o
 f view\, as well some applications to study the large-scale geometry of 
 this group. This is the joint work with my supervisor\, Richard Webb.\n\
 nRoom: Frank Adams 1\n\nFurther information: https://personalpages.manch
 ester.ac.uk/staff/yotam.smilansky/dynamics_analysis
STATUS:TENTATIVE
TRANSP:TRANSPARENT
CLASS:PUBLIC
LOCATION:Frank Adams 1\, Alan Turing Building\, Manchester
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