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SUMMARY:Soheyla Feyzbakhsh (Imperial College)
DTSTART:20210622T150000Z
DTEND:20210622T160000Z
DTSTAMP:20260423T021529Z
UID:DerSem/20
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/DerSem/20/">
 Rank r DT theory from rank 1</a>\nby Soheyla Feyzbakhsh (Imperial College)
  as part of Derived seminar\n\n\nAbstract\nFix a Calabi-Yau 3-fold X satis
 fying the Bogomolov-Gieseker conjecture of Bayer-Macrì-Toda\, such as the
  quintic 3-fold. I will explain joint works in progress with Richard Thoma
 s that aim to express Joyce’s generalised DT invariants counting Gieseke
 r semistable sheaves of any rank r on X in terms of those counting sheaves
  of rank 1. By the MNOP conjecture\, the latter are determined by the Grom
 ov-Witten invariants of X. Our technique is to use wall-crossing with resp
 ect to weak Bridgeland stability conditions on X.\n
LOCATION:https://researchseminars.org/talk/DerSem/20/
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