Uppers to zero and semistar operations in polynomial rings
Abstract
Given a stable semistar operation of finite type on an integral domain , we show that it is possible to define in a canonical way a stable semistar operation of finite type on the polynomial ring , such that is a -quasi-Pr\"ufer domain if and only if each upper to zero in is a quasi--maximal ideal. This result completes the investigation initiated by Houston-Malik-Mott \cite[Section 2]{hmm} in the star operation setting. Moreover, we show that is a Pr\"ufer -multiplication (resp., a -Noetherian; a -Dedekind) domain if and only if is a Pr\"ufer -multiplication (resp., a -Noetherian; a -Dedekind) domain. As an application of the techniques introduced here, we obtain a new interpretation of the Gabriel-Popescu localizing systems of finite type on an integral domain (Problem 45 of \cite{cg}), in terms of multiplicatively closed sets of the polynomial ring .
Cite
@article{arxiv.0706.3761,
title = {Uppers to zero and semistar operations in polynomial rings},
author = {Gyu Whan Chang and Marco Fontana},
journal= {arXiv preprint arXiv:0706.3761},
year = {2007}
}