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X-WR-CALNAME:Joint seminar: Ko Honda: \"Contact structures\, Heegaard Fl
 oer homology and triangulated categories\"
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TZID:America/New_York
LAST-MODIFIED:20080228T161839Z
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DTSTART:20071104T060000
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DTSTART:20080309T010000
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DURATION:PT1H
LOCATION:Math 520\, Columbia University
DTSTAMP:20080228T152921Z
UID:97399260-69EE-42BE-9200-E70479FD7866
SEQUENCE:9
DTSTART;TZID=America/New_York:20080307T141500
SUMMARY:Joint seminar: Ko Honda: \"Contact structures\, Heegaard Floer h
 omology and triangulated categories\"
DESCRIPTION:Abstract: The goal of this talk is to associate a category \
 \mathcal{C}(\\Sigma) to a surface \\Sigma\, called the contact category 
 and constructed from contact structures on \\Sigma x [0\,1]. The categor
 y \\mathcal{C}(\\Sigma) satisfies many of the axioms of a triangulated c
 ategory\, and\, in particular\, has distinguished triangles which we cal
 l the {\\em bypass exact triangles}. We then describe an \"exact\" funct
 or from \\mathcal{C}(\\Sigma) to the category of vector spaces\, via Hee
 gaard/sutured Floer homology.
ORGANIZER;CN="Robert Lipshitz":mailto:lipshitz@math.stanford.edu
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