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X-WR-CALNAME:Alexander Ritter: \"Novikov-symplectic cohomology and exact
  Lagrangian embeddings\"
PRODID:-//Apple Computer\, Inc//iCal 2.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
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TZID:America/New_York
LAST-MODIFIED:20090214T031510Z
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DTSTART:20090308T070000
TZOFFSETTO:-0400
TZOFFSETFROM:+0000
TZNAME:EDT
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DURATION:PT1H
LOCATION:Math 520\, Columbia University
DTSTAMP:20090214T031502Z
UID:B214E5EE-FED4-4F19-822D-B14AAFE6F840
SEQUENCE:8
URL;VALUE=URI:http://math.columbia.edu/~lipshitz/SGGT/
DTSTART;TZID=America/New_York:20090313T131000
SUMMARY:Alexander Ritter: \"Novikov-symplectic cohomology and exact Lagr
 angian embeddings\"
DESCRIPTION:Abstract: We are interested in finding topological obstructi
 ons to the existence of exact Lagrangian submanifolds L inside a cotange
 nt bundle T^*N. Under mild homotopy assumptions on N\, I proved that the
  image of \\pi_2(L) inside \\pi_2(N) has finite index. This result makes
  no assumption about the Maslov class of L\, and the manifolds need not 
 be orientable. My approach builds on Viterbo's work: by using symplectic
  cohomology we construct a transfer map on the Novikov homologies of the
  free loop spaces of N and L. The result then follows from a vanishing r
 esult for the Novikov homology of loop spaces.
ORGANIZER;CN="Robert Lipshitz":mailto:lipshitz@math.stanford.edu
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