English

$t$-local domains and valuation domains

Commutative Algebra 2018-12-11 v1 Algebraic Geometry Rings and Algebras

Abstract

In a valuation domain (V,M)(V,M) every nonzero finitely generated ideal JJ is principal and so, in particular, J=JtJ=J^t, hence the maximal ideal MM is a tt-ideal. Therefore, the tt-local domains (i.e., the local domains, with maximal ideal being a tt-ideal) are "cousins" of valuation domains, but, as we will see in detail, not so close. Indeed, for instance, a localization of a tt-local domain is not necessarily tt-local, but of course a localization of a valuation domain is a valuation domain. So it is natural to ask under what conditions is a tt-local domain a valuation domain? The main purpose of the present paper is to address this question, surveying in part previous work by various authors containing useful properties for applying them to our goal.

Keywords

Cite

@article{arxiv.1812.03713,
  title  = {$t$-local domains and valuation domains},
  author = {Marco Fontana and Muhammad Zafrullah},
  journal= {arXiv preprint arXiv:1812.03713},
  year   = {2018}
}