On Lyubeznik numbers of projective schemes
Commutative Algebra
2007-09-07 v1 Algebraic Geometry
Abstract
Let be an arbitrary projective scheme over a field . Let be the local ring at the vertex of the affine cone for some embedding . G. Lyubeznik asked (in \cite{l2}) whether the integers (defined in \cite{l1}), called the Lyubeznik numbers of , depend only on , but not on the embedding. In this paper, we make a big step toward a positive answer to this question by proving that in positive characteristic, for a fixed , the Lyubezink numbers of the local ring , can only achieve finitely many possible values under all choices of embeddings.
Keywords
Cite
@article{arxiv.0709.0747,
title = {On Lyubeznik numbers of projective schemes},
author = {Wenliang Zhang},
journal= {arXiv preprint arXiv:0709.0747},
year = {2007}
}