English

Jaffard families and localizations of star operations

Commutative Algebra 2016-10-06 v1

Abstract

We generalize the concept of localization of a star operation to flat overrings; subsequently, we investigate the possibility of representing the set Star(R)\mathrm{Star}(R) of star operations on RR as the product of Star(T)\mathrm{Star}(T), as TT ranges in a family of overrings of RR with special properties. We then apply this method to study the set of star operations on a Pr\"ufer domain RR, in particular the set of stable star operations and the star-class groups of RR.

Keywords

Cite

@article{arxiv.1610.01442,
  title  = {Jaffard families and localizations of star operations},
  author = {Dario Spirito},
  journal= {arXiv preprint arXiv:1610.01442},
  year   = {2016}
}

Comments

To appear in the Journal of Commutative Algebra