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DTSTAMP:20221207T050446Z
UID:20221207T040446-1458269273@www.mn.uio.no
DTSTART:20221208T131500Z
DTEND:20221208T150000Z
LOCATION:NHA B1120
DESCRIPTION:Consider the singularity C^4/(Z/2), where Z/2 acts as the matr
ix diag(-1,-1,-1,-1). This singularity is special, in that it does not ad
mit a crepant resolution. However, it does admit a so-called noncommutati
ve crepant resolution, given by a Calabi-Yau 4 quiver. The moduli space o
f representations of this quiver turns out to share a lot of similarities
with moduli spaces of sheaves over Calabi-Yau fourfolds, and it turns ou
t that we can reuse techniques from studying moduli of sheaves to define
and compute invariants of this moduli space of representations. In this t
alk, I will explain how these invariants can be defined, and give conject
ures about the forms of these invariants. This talk is based on joint wor
k with Raf Bocklandt.
SUMMARY:Reinier Schmiermann (Utrecht) - Counting modules over a noncommuta
tive resolution of C^4/(Z/2)
URL:https://www.mn.uio.no/math/english/research/groups/algebra/events/semi
nars/2022/schmiermann.html
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