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In this article we study two classes of integral domains. The first is characterized by having a finite intersection of principal ideals being finitely generated only when it is principal. The second class consists of the integral domains…

Commutative Algebra · Mathematics 2020-02-05 Lorenzo Guerrieri , K. Alan Loper

This is an extended introduction to discrete valuation rings and Dedekind domains. Some natural generalizations of Dedekind domains are also (briefly) discussed including "almost Dedekind domains", Pr\"ufer domains, Krull domains, and…

History and Overview · Mathematics 2021-02-24 Wayne Aitken

It has been a well-known fact since Euclid's time that there exist infinitely many rational primes. Two natural questions arise: In which other rings, sufficiently similar to the integers, are there infinitely many irreducible elements? Is…

Commutative Algebra · Mathematics 2007-05-23 Fabrizio Zanello

We prove that for every indecomposable ordinal there exists a (transfinitely valued) Euclidean domain whose minimal Euclidean norm is of that order type. Conversely, any such norm must have indecomposable type, and so we completely…

Commutative Algebra · Mathematics 2018-08-30 Chris J. Conidis , Pace P. Nielsen , Vandy Tombs

An integral domain $R$ is an $i$-domain if for every overring $S$ of $R$, $\text{Spec}(S) \rightarrow \text{Spec}(R)$ is injective and is a mated integral if for every overring $S$ of $R$ and prime ideal $P$ of $R$ such that $PS \neq S$,…

Commutative Algebra · Mathematics 2025-05-23 Mike Hensler , Hannah Klawa

An integral domain $D,$ with quotient field $K,$ is a $v$-domain if for each nonzero finitely generated ideal $A$ of $D$ we have $(AA^{-1})^{-1}=D.$ It is well known that if $D$ is a $v$-domain$,$ then some quotient ring $D_{S}$ of $D$ may…

Commutative Algebra · Mathematics 2021-04-20 Muhammad Zafrullah

The notion of PRINC domain was introduced by Salce and Zanardo (2014), motivated by the investigation of the products of idempotent matrices with entries in a commutative domain. An integral domain R is a PRINC domain if every two-generated…

Commutative Algebra · Mathematics 2023-12-14 Laura Cossu , Paolo Zanardo

We call a right module $M$ (strongly) virtually regular if every (finitely generated) cyclic submodule is isomorphic to a direct summand. $M$ is said to be completely virtually regular if every submodule is virtually regular. In this paper,…

Commutative Algebra · Mathematics 2024-06-18 Engin Büyükaşık , Özlem Irmak Demir

It is well known that a domain without proper strongly divisorial ideals is completely integrally closed. In this paper we show that a domain without {\em prime} strongly divisorial ideals is not necessarily completely integrally closed,…

Commutative Algebra · Mathematics 2007-05-23 Valentina Barucci , Stefania Gabelli , Moshe Roitman

It is shown that a local ring R of bounded module type is an almost maximal valuation ring if there exists a non-maximal prime ideal J such that R/J is a maximal valuation domain.

Rings and Algebras · Mathematics 2007-05-23 Francois Couchot

Let R* be an ideal-adic completion of a Noetherian integral domain R and let L be a subfield of the total quotient ring of R* such that L contains R. Let A denote the intersection of L with R*. The integral domain A sometimes inherits nice…

Commutative Algebra · Mathematics 2014-04-15 William Heinzer , Christel Rotthaus , Sylvia Wiegand

The aim of this paper is to prove that every non-empty set of valuations centered at a two-dimensional regular domain has an infimum. We also generalize some results related to a non-metric tree.

Commutative Algebra · Mathematics 2012-05-28 Josnei Novacoski

Let $R=\oplus_{m\geq 0}R_m$ be a standard graded equidimensional ring over a field $R_0$, and $I\subseteq J$ be two non-nilpotent graded ideals in $R$. Then we give a set of numerical characterizations of the integral dependence of $I$ and…

Commutative Algebra · Mathematics 2025-05-12 Suprajo Das , Sudeshna Roy , Vijaylaxmi Trivedi

Let $\Gamma$ be a torsionless commutative cancellative monoid, $R =\bigoplus_{\alpha \in \Gamma}R_{\alpha}$ be a $\Gamma$-graded integral domain, and $H$ be the set of nonzero homogeneous elements of $R$. In this paper, we show that if $Q$…

Commutative Algebra · Mathematics 2017-11-15 Gyu Whan Chang , Parviz Sahandi

In this article we revisit a problem regarding Bezout domains, namely, whether every Bezout domain is an elementary divisor domain. We prove that a Bezout domain in which every maximal ideal is principal is an elementary divisor ring

Rings and Algebras · Mathematics 2012-10-31 Bogdan Zabavsky

In this paper, we advance an ideal-theoretic analogue of a "finite factorization domain" (FFD), giving such a domain the moniker "finite molecularization domain" (FMD). We characterize FMD's as those factorable domains (termed "molecular…

Commutative Algebra · Mathematics 2021-01-08 Andrew J. Hetzel , Anna L. Lawson , Andreas Reinhart

We give examples of atomic integral domains satisfying each of the eight logically possible combinations of existence or non-existence of the following kinds of elements: 1) primes, 2) absolutely irreducible elements that are not prime, and…

Commutative Algebra · Mathematics 2026-01-13 Victor Fadinger , Sophie Frisch , Sarah Nakato , Daniel Smertnig , Daniel Windisch

The *reciprocal complement* $R(D)$ of an integral domain $D$ is the subring of its fraction field generated by the reciprocals of its nonzero elements. Many properties of $R(D)$ are determined when $D$ is a polynomial ring in $n\geq 2$…

Commutative Algebra · Mathematics 2025-08-27 Neil Epstein , Lorenzo Guerrieri , K. Alan Loper

It is well-known that an integrally closed domain $D$ can be express as the intersection of its valuation overrings but, if $D$ is not a Pr\"{u}fer domain, the most of valuation overrings of $D$ cannot be seen as localizations of $D$. The…

Commutative Algebra · Mathematics 2023-04-18 Lorenzo Guerrieri , K. Alan Loper

Let $A\subset B$ be an integral ring extension of integral domains with fields of fractions $K$ and $L$, respectively. The integral degree of $A\subset B$, denoted by ${\rm d}_A(B)$, is defined as the supremum of the degrees of minimal…

Commutative Algebra · Mathematics 2018-03-02 José M. Giral , Liam O'Carroll , Francesc Planas-Vilanova , Bernat Plans