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SUMMARY:Dragos Oprea (UCSD)
DTSTART:20201023T153000Z
DTEND:20201023T170000Z
DTSTAMP:20260423T022934Z
UID:UBC-AG/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UBC-AG/5/">V
 irtual invariants of Quot schemes of surfaces</a>\nby Dragos Oprea (UCSD) 
 as part of UBC Vancouver Algebraic Geometry Seminar\n\n\nAbstract\nThe Quo
 t schemes of surfaces parametrizing quotients of dimension at most 1 of th
 e trivial sheaf carry 2-term perfect obstruction theories. Several generat
 ing series of associated virtual invariants are conjectured to be given by
  rational functions. We show this is the case for several geometries inclu
 ding all smooth projective surfaces with p_g>0. This talk is based on join
 t work with Noah Arbesfeld\, Drew Johnson\, Woonam Lim and Rahul Pandharip
 ande.\n
LOCATION:https://researchseminars.org/talk/UBC-AG/5/
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