Normal domain

This article defines a property of integral domains, viz., a property that, given any integral domain, is either true or false for that.
View other properties of integral domains | View all properties of commutative unital rings
VIEW RELATED: Commutative unital ring property implications | Commutative unital ring property non-implications |Commutative unital ring metaproperty satisfactions | Commutative unital ring metaproperty dissatisfactions | Commutative unital ring property satisfactions | Commutative unital ring property dissatisfactions

Definition

Symbol-free definition

An integral domain is said to be normal if it is integrally closed in its field of fractions.

Relation with other properties

Stronger properties

• Unique factorization domain
• Principal ideal domain
• Euclidean domain
• Dedekind domain

Metaproperties

Closure under taking localizations

This property of integral domains is closed under taking localizations: the localization at a multiplicatively closed subset of a commutative unital ring with this property, also has this property. In particular, the localization at a prime ideal, and the localization at a maximal ideal, have the property.
View other localization-closed properties of integral domains | View other localization-closed properties of commutative unital rings

In fact, the localization at a multiplicatively closed subset of a normal domain continues to be a normal domain. For full proof, refer: Normal domain is localization-closed