English

On Dedekind domains whose class groups are direct sums of cyclic groups

Commutative Algebra 2023-05-31 v1

Abstract

For a given family (Gi)iN(G_i)_{i \in \N} of finitely generated abelian groups, we construct a Dedekind domain DD having the following properties. \begin{enumerate} \item \Pic(D)iNGi\Pic(D) \cong \bigoplus_{i \in \N}G_i. \item For each iNi \in \N, there exists a submonoid SiDS_i \subseteq D^{\bullet} with \Pic(DSi)Gi\Pic (D_{S_i}) \cong G_i. \item Each class of \Pic(D)\Pic (D) and of all \Pic(DSi)\Pic (D_{S_i}) contains infinitely many prime ideals. \end{enumerate} Furthermore, we study orders as well as sets of lengths in the Dedekind domain DD and in all its localizations DSiD_{S_i}.

Keywords

Cite

@article{arxiv.2305.18796,
  title  = {On Dedekind domains whose class groups are direct sums of cyclic groups},
  author = {Gyu Whan Chang and Alfred Geroldinger},
  journal= {arXiv preprint arXiv:2305.18796},
  year   = {2023}
}

Comments

Journal of Pure and Applied Algebra, to appear

R2 v1 2026-06-28T10:50:18.549Z