Star Configurations are Set-Theoretic Complete Intersections
Algebraic Geometry
2016-01-27 v3 Commutative Algebra
Abstract
Let be a rank arrangement of hyperplanes, with the property that any of the defining linear forms are linearly independent (i.e., is called generic). We show that for any , the subspace arrangement with defining ideal generated by the fold products of the defining linear forms of is a set-theoretic complete intersection, which is equivalent to saying that star configurations have this property.
Cite
@article{arxiv.1507.05667,
title = {Star Configurations are Set-Theoretic Complete Intersections},
author = {Stefan Tohaneanu},
journal= {arXiv preprint arXiv:1507.05667},
year = {2016}
}
Comments
5 pages. In this version we present an update with an example answering negatively the question asked previously whether or not, for ANY hyperplane arrangement, all the ideals generated by a-fold products of the defining linear forms are set-theoretic complete intersections