English

Semigroup rings as weakly Krull domains

Commutative Algebra 2022-08-31 v1

Abstract

Let DD be an integral domain and Γ\Gamma be a torsion-free commutative cancellative (additive) semigroup with identity element and quotient group GG. In this paper, we show that if char(D)=0(D)=0 (resp., char(D)=p>0(D)=p>0), then D[Γ]D[\Gamma] is a weakly Krull domain if and only if DD is a weakly Krull UMT-domain, Γ\Gamma is a weakly Krull UMT-monoid, and GG is of type (0,0,0,)(0,0,0, \dots ) (resp., type (0,0,0,)(0,0,0, \dots ) except pp). Moreover, we give arithmetical applications of this result.

Cite

@article{arxiv.2201.09537,
  title  = {Semigroup rings as weakly Krull domains},
  author = {Gyu Whan Chang and Victor Fadinger and Daniel Windisch},
  journal= {arXiv preprint arXiv:2201.09537},
  year   = {2022}
}
R2 v1 2026-06-24T08:59:47.764Z