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SUMMARY:Valeriano Lanza (UFF)
DTSTART:20210526T183000Z
DTEND:20210526T200000Z
DTSTAMP:20260423T021706Z
UID:BRAG/47
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BRAG/47/">Mo
 duli of flags of sheaves: a quiver description</a>\nby Valeriano Lanza (UF
 F) as part of Brazilian algebraic geometry seminar\n\n\nAbstract\nIn [1]\,
  the moduli spaces of framed flags of sheaves on P2 were described by mean
 s of representations of the so-called enhanced ADHM quiver. We first revie
 w those results\, with a recent refinement concerning the chamber structur
 e in the space of stability parameters. We shall then discuss the obstruct
 ion theory for these moduli spaces\, showing in general that they have a  
 perfect obstruction theory\, and providing for specific choices of invaria
 nts a class of unobstructed points. Finally\, open problems and possible f
 urther developments will be presented. This is a joint work with Rodrigo v
 on Flach and Marcos Jardim. \n\n[1] R. A. von Flach and M. Jardim\, Moduli
  spaces of framed flags of sheaves on the projective plane. Journal of Geo
 metry and Physics 118 (2017)\, 138–168.\n
LOCATION:https://researchseminars.org/talk/BRAG/47/
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