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SUMMARY:Mark Shoemaker (Colorado State University)
DTSTART:20210222T230000Z
DTEND:20210223T000000Z
DTSTAMP:20260423T010132Z
UID:UBC-AG/20
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UBC-AG/20/">
 A mirror theorem for gauged linear sigma models</a>\nby Mark Shoemaker (Co
 lorado State University) as part of UBC Vancouver Algebraic Geometry Semin
 ar\n\n\nAbstract\nLet G be a finite group acting on a smooth complex varie
 ty M.  Let  X —> M/G be a crepant resolution by a smooth variety X.  The
  Crepant Resolution Conjecture predicts a complicated relationship between
  the Gromov—Witten invariants of X and the orbifold Gromov—Witten inva
 riants of the stack [M/G].\n\nIn this talk I will describe an analogous co
 njecture involving Landau—Ginzburg (LG) models.  An LG model is\, roughl
 y\, a smooth complex variety Y together with a regular function w: Y—> \
 \CC.  LG models can be used to give alternate “resolutions” of hypersu
 rface singularities in a certain sense and are related to so-called noncom
 mutative resolutions. I will briefly discuss the gauged linear sigma model
 \, which is used to define curve counting invariants for LG models\, and d
 escribe a new technique for computing these invariants.\n
LOCATION:https://researchseminars.org/talk/UBC-AG/20/
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