On Superheight Conditions for the Affineness of Open Subsets |
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Institution: | Fakultät für Mathematik, Ruhr-Universität Bochum, Bochum, 44780, Germany |
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Abstract: | In this paper we consider the open complement U of a hypersurface Y = V(a) in an affine scheme X. We study the relations between the affineness of U, the intersection of Y with closed subschemes, the property that every closed surface in U is affine, the property that every analytic closed surface is Stein, and the superheight of a defining ideal a. |
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