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SUMMARY:Rational equivariant cohomology theories\, Hasse squares\, and rig
 idity of derived categories - John Greenlees (Sheffield)
DTSTART:20101124T141500Z
DTEND:20101124T151500Z
UID:TALK26013@talks.cam.ac.uk
CONTACT:Burt Totaro
DESCRIPTION:The main result (with Brooke Shipley) is a complete and calcul
 able\nalgebraic model of rational equivariant cohomology theories for tori
 .\nThe formal framework of the result may be of wider interest\, since it 
 is\nbased on patching together rigidity statements for commutative DGAs\nw
 ith polynomial cohomology (for example this applies to derived\ncategories
  of sheaves over an elliptic curve).
LOCATION:MR13\, CMS
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