English

Uppers to zero and semistar operations in polynomial rings

Commutative Algebra 2007-06-27 v1 Algebraic Geometry

Abstract

Given a stable semistar operation of finite type \star on an integral domain DD, we show that it is possible to define in a canonical way a stable semistar operation of finite type [][\star] on the polynomial ring D[X]D[X], such that DD is a \star-quasi-Pr\"ufer domain if and only if each upper to zero in D[X]D[X] is a quasi-[][\star]-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 DD is a Pr\"ufer \star-multiplication (resp., a \star-Noetherian; a \star-Dedekind) domain if and only if D[X]D[X] is a Pr\"ufer [][\star]-multiplication (resp., a [][\star]-Noetherian; a [][\star]-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 DD (Problem 45 of \cite{cg}), in terms of multiplicatively closed sets of the polynomial ring D[X]D[X].

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}
}
R2 v1 2026-06-21T08:42:04.356Z