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X-WR-CALNAME:Florent Schaffhauser
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LAST-MODIFIED:20080905T193730Z
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DTSTART:20090308T010000
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BEGIN:VEVENT
DURATION:PT1H
LOCATION:Math 520\, Columbia
DTSTAMP:20080905T193716Z
UID:A94D2423-2EA8-4E76-BE10-D4226C2CEF27
SEQUENCE:4
DTSTART;TZID=America/New_York:20081031T130000
SUMMARY:Florent Schaffhauser
DESCRIPTION:Abstract: In this talk\, we generalize to arbitrary surface 
 groups and arbitrary compact connected Lie groups the notion of decompos
 able representation\, first introduced by Falbel and Wentworth for unita
 ry representations of the punctured sphere group. We show that such deco
 mposable representations are the elements of the fixed-point set of an a
 nti-symplectic involution defined on the moduli space of representations
 \, forming therefore a Lagrangian submanifold of this moduli space. The 
 existence of decomposable representations is obtained as a corollary of 
 a real convexity theorem for group-valued momentum maps.
ORGANIZER;CN="Robert Lipshitz":mailto:lipshitz@math.stanford.edu
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