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SUMMARY:Michele Graffeo (SISSA\, Italy)
DTSTART:20220526T190000Z
DTEND:20220526T200000Z
DTSTAMP:20260423T021408Z
UID:UFPB/40
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UFPB/40/">Mi
 nimal resolution of A_k singularities as moduli spaces of Z/(k+1)Z-constel
 lations</a>\nby Michele Graffeo (SISSA\, Italy) as part of Seminários de 
 Matemática da UFPB\n\n\nAbstract\nIt is a classical result that\, for any
  finite subgroup G of SL(n\,C)\, for n=2\,3\, there exists (at least) one 
 crepant resolution of the singularity "affine n-space modulo G-action". Wh
 en G is abelian\, thanks to a work of Craw and Ishii\, any such resolution
  can be interpreted as the fine moduli space of certain coherent sheaves\,
  called G-constellations\, which are stable with respect to a GIT stabilit
 y condition. In my talk I will introduce the above mentioned notions and I
  will talk about some combinatorial objects that I have introduced to desc
 ribe the two-dimensional setting. If time permits\, I will also explain so
 me three-dimensional phenomena.\n
LOCATION:https://researchseminars.org/talk/UFPB/40/
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