Article ID Journal Published Year Pages File Type
8897648 Journal of Pure and Applied Algebra 2018 13 Pages PDF
Abstract
Let A be the local ring at a point of a normal complex variety with completion R=Aˆ. Srinivas has asked about the possible images of the induced map ClA→ClR over all geometric local 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.
Related Topics
Physical Sciences and Engineering Mathematics Algebra and Number Theory
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