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X-WR-CALNAME:Vera Vertesi: \"Legendrian knots and Heegaard Floer homolog
 ies\"
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CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:America/New_York
LAST-MODIFIED:20081015T003826Z
BEGIN:STANDARD
DTSTART:20081102T060000
TZOFFSETTO:-0500
TZOFFSETFROM:+0000
TZNAME:EST
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BEGIN:DAYLIGHT
DTSTART:20090308T010000
TZOFFSETTO:-0400
TZOFFSETFROM:-0500
TZNAME:EDT
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BEGIN:VEVENT
DURATION:PT1H
LOCATION:Math 520\, Columbia University
DTSTAMP:20081015T003818Z
UID:E533B110-5A93-4F15-9B26-6895464F1C63
SEQUENCE:6
URL;VALUE=URI:http://math.columbia.edu/~lipshitz/SGGT/
DTSTART;TZID=America/New_York:20081107T153000
SUMMARY:Vera Vertesi: \"Legendrian knots and Heegaard Floer homologies\"
 
DESCRIPTION:Abstract: Using the language of Heegaard Floer homology rece
 ntly two different invariants were defined for Legendrian and transverse
  knots in a contact 3-manifold. Both of them arises from the generalizat
 ion of the contact invariant in Heegaard Floer homology. The Legendrian 
 invariant defined by Lisca\, Ozsváth\, Stipsicz and Szabó takes its valu
 es in knot Floer homology\, while the other one is in the sutured Floer 
 homology\, defined as the EH-class of Honda\, Kazez and Matic for the co
 mplement of a Legendrian knot. In this talk I will give a brief descript
 ion of both of these invariants\, and describe their relation. As a coro
 llary we will obtain\, that the Legendrian invariant vanishes for knots 
 having Giroux-torsion in their complement.
ORGANIZER;CN="Robert Lipshitz":mailto:lipshitz@math.stanford.edu
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