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SUMMARY:Erik Carlsson (UC Davis)
DTSTART:20211116T190000Z
DTEND:20211116T200000Z
DTSTAMP:20260423T024647Z
UID:AG-Davis/40
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AG-Davis/40/
 ">GKM spaces and the nabla operator</a>\nby Erik Carlsson (UC Davis) as pa
 rt of UC Davis algebraic geometry seminar\n\n\nAbstract\nI'll explain some
  recent results with A. Mellit which show that the matrix elements of the 
 nabla operator\, which is diagonal in the modified MacDonald basis of symm
 etric functions\, compute the Frobenius character of the GKM cohomology of
  the "unramified affine Springer fiber." From this we can see the q\,t-sym
 metry\, and also a geometric interpretation of a conjecture about the sign
 s of these coefficients.\n
LOCATION:https://researchseminars.org/talk/AG-Davis/40/
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