Non-very ample configurations arising from contingency tables
Commutative Algebra
2019-01-11 v3 Statistics Theory
Statistics Theory
Abstract
In this paper, it is proved that, if a toric ideal possesses a fundamental binomial none of whose monomials is squarefree, then the corresponding semigroup ring is not very ample. Moreover, very ample semigroup rings of Lawrence type are discussed. As an application, we study very ampleness of configurations arising from contingency tables.
Keywords
Cite
@article{arxiv.0904.3681,
title = {Non-very ample configurations arising from contingency tables},
author = {Hidefumi Ohsugi and Takayuki Hibi},
journal= {arXiv preprint arXiv:0904.3681},
year = {2019}
}
Comments
6 pages, Title changed. References, Lemma etc. added