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The class group of a minimal model of a quotient singularity

Author:
Johannes Schmitt
Keyword:
Mathematics, Algebraic Geometry, Algebraic Geometry (math.AG)
journal:
--
date:
2023-09-10 16:00:00
Abstract
Let $V$ be a finite-dimensional vector space over the complex numbers and let $G\leq \operatorname{SL}(V)$ be a finite group. We describe the class group of a minimal model (that is, $\mathbb Q$-factorial terminalization) of the linear quotient $V/G$. We prove that such a class group is completely controlled by the junior elements contained in $G$.
PDF: The class group of a minimal model of a quotient singularity.pdf
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