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Finite-dimensionality criterion for local Picard groups of S2 surfaces
Let $(s,S)$ be an $S_2$ surface. Finite-dimensionality conjecture. There is a finite-dimensional local Picard group $\operatorname{\mathbf{Pic}}^{\rm loc}(s,S)$ if and only if $S$ …
openlocal-picard-groups seminormality surface-singularities
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Finite-dimensionality criterion for local Picard groups of S2 surfaces