Geometric Divisors in Normal Local Domains
Algebraic Geometry
2016-06-08 v1
Abstract
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.
Cite
@article{arxiv.1606.01977,
title = {Geometric Divisors in Normal Local Domains},
author = {John Brevik and Scott Nollet},
journal= {arXiv preprint arXiv:1606.01977},
year = {2016}
}
Comments
15 pages