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SUMMARY:Becca Winarski (College of the Holy Cross)
DTSTART:20221103T140500Z
DTEND:20221103T150000Z
DTSTAMP:20260423T021000Z
UID:GaTO/70
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GaTO/70/">Po
 lynomials\, branched covers\, and trees</a>\nby Becca Winarski (College of
  the Holy Cross) as part of Geometry and topology online\n\nLecture held i
 n Room B3.02 in the Zeeman Building\, University of Warwick.\n\nAbstract\n
 Thurston proved that a post-critically finite branched cover of the plane 
 is either equivalent to a polynomial (that is: conjugate via a mapping cla
 ss) or it has a topological obstruction. We use topological techniques –
  adapting tools used to study mapping class groups – to produce an algor
 ithm that determines when a branched cover is equivalent to a polynomial. 
  When it is\, we determine which polynomial it is equivalent to. \n\nThis 
 is joint work with Jim Belk\, Justin Lanier\, and Dan Margalit.\n
LOCATION:https://researchseminars.org/talk/GaTO/70/
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