Fiber invariants of projective morphisms and regularity of powers of ideals
Commutative Algebra
2019-01-15 v1
Abstract
We introduce an invariant, associated to a coherent sheaf over a projective morphism of schemes, which controls when sheaf cohomology can be passed through the given morphism. We then use this invariant to estimate the stability indexes of the regularity and a*-invariant of powers of homogeneous ideals.
Keywords
Cite
@article{arxiv.1901.04425,
title = {Fiber invariants of projective morphisms and regularity of powers of ideals},
author = {Sankhaneel Bisui and Huy Tai Ha and Abu Chackalamannil Thomas},
journal= {arXiv preprint arXiv:1901.04425},
year = {2019}
}
Comments
16 pages