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SUMMARY:Constructing the virtual fundamental cycle - Dusa McDuff (Barnard 
 College)
DTSTART:20170817T143000Z
DTEND:20170817T153000Z
UID:TALK75891@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Consider a&nbsp\; space $X$\, such as a compact space of $J$-h
 olomorphic stable maps with closed domain\, that is the zero set of a Fred
 holm operator.  This note explains how to define the&nbsp\; virtual fundam
 ental class of $X$ starting from a finite dimensional reduction in the for
 m of a Kuranishi atlas\, by&nbsp\; representing $X$ as the zero set of a s
 ection of a (topological) orbibundle that is constructed from the atlas.  
 &nbsp\;&nbsp\; &nbsp\;Throughout we assume that the  &nbsp\; atlas satisfi
 es Pardon&#39\;s topological version of the index condition that can be ob
 tained from a standard\, rather than a smooth\, gluing theorem.
LOCATION:Seminar Room 1\, Newton Institute
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