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Geometric Divisors in Normal Local Domains
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Paper
Geometric Divisors in Normal Local Domains
2016
Overview
Let A be the local ring at a point of a normal complex variety with completion R. Srinivas has asked about the possible images of the induced map from Cl A to Cl R over all geometric normal domains A with fixed completion R. We use Noether-Lefschetz theory to prove that all finitely generated subgroups are possible in some familiar cases. As a byproduct we show that every finitely generated abelian group appears as the class group of the local ring at the vertex of a cone over some smooth complex variety of each positive dimension.
Publisher
Cornell University Library, arXiv.org
Subject
