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SUMMARY:Stasheff's associahedra and R.J.Thompson's groups
DTSTART:20130614T141500
DTEND:20130614T153000
DTSTAMP:20260505T013902Z
UID:010de7129dafb110ca203c8754774436b089720e1f06651c8bfeb6be
CATEGORIES:Conferences - Seminars
DESCRIPTION:Ariadna Fossas Tenas (EPFL)\nIn this talk we will construct an
  infinite dimensional cellular complex C that can be seen as a generalisat
 ion of the associahedron for an infinitely sided convex polygon. To give a
 n idea\, the vertices of C are in bijection with all possible triangulatio
 ns of the circle which differ from a given one only in finitely many diago
 nals. The complex C is contractible and its group of combinatorial automor
 phisms is related to Thompson's group T\, which is an infinite finitely pr
 esented simple group of homeomorphisms of the circle.
LOCATION:MA 12
STATUS:CONFIRMED
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