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A derived approach to geometric McKay correspondence in dimension three

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arxiv 0803.2990 v2 pith:DIXZQCCN submitted 2008-03-20 math.AG

classification math.AG
keywords correspondencegeometricderiveddimensionmckaythreeabelianappears
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We propose a three dimensional generalization of the geometric McKay correspondence described by Gonzales-Sprinberg and Verdier in dimension two. We work it out in detail when G is abelian and C^3/G has a single isolated singularity. More precisely, we show that the Bridgeland-King-Reid derived category equivalence induces a natural geometric correspondence between irreducible representations of G and subschemes of the exceptional set of G-Hilb (C^3). This correspondence appears to be related to Reid's recipe.

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  1. Walls for $G$-Hilb via Reid's Recipe

    math.AG 2019-08 conditional novelty 6.0 of 10

    The walls of the G-Hilb chamber for finite abelian G in SL3(C) are exactly: Type I walls from (-1,-1)-curves, Type III walls from generalised long sides, and Type 0 walls from exceptional divisors, with all inequaliti...

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