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Grassmannians and Singularities

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arxiv 2109.02968 v4 pith:PIHMPUXW submitted 2021-09-07 math.AG

classification math.AG
keywords existsschemetherewidetildeadmitsbirationalclosedcontaining
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Let $X$ be an integral scheme of finite presentation over a perfect field. Let $q$ be a singular closed point of $X$. We prove that there exists an open subset $V$ of $X$ containing $q$ such that $V$ admits a resolution, that is, there exists a smooth scheme $\widetilde V$ and a proper birational morphism from $\widetilde V$ onto $V$.

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