Singularities of generic projection hypersurfaces
Algebraic Geometry
2007-06-10 v2
Abstract
Linearly projecting smooth projective varieties provides a method of obtaining hypersurfaces birational to the original varieties. We show that in low dimension, the resulting hypersurfaces only have Du Bois singularities. Moreover, we conclude that these Du Bois singularities are in fact semi log canonical. However, we demonstrate the existence of counterexamples in high dimension -- the generic linear projection of certain varieties of dimension 30 or higher is neither semi log canonical nor Du Bois.
Cite
@article{arxiv.0705.4481,
title = {Singularities of generic projection hypersurfaces},
author = {Davis C. Doherty},
journal= {arXiv preprint arXiv:0705.4481},
year = {2007}
}