owl:SymmetricProperty                       

Definition

An owl:SymmetricProperty is a property for which holds that if the pair (x,y) is an instance of P, then the pair (y,x) is also an instance of P. Syntactically, a property is defined as symmetric by making it an instance of the built-in OWL class owl:SymmetricProperty, a subclass of owl:ObjectProperty.

Schema

    <rdfs:Class rdf:ID="SymmetricProperty">

        <rdfs:label>SymmetricProperty</rdfs:label>

        <rdfs:subClassOf rdf:resource="#ObjectProperty"/>

    </rdfs:Class>

Example listing

Triple

RDF/XML

A popular example of a symmetric property is the friendOf relation:

    <owl:SymmetricProperty rdf:ID="friendOf">

        <rdfs:domain rdf:resource="#Human"/>

        <rdfs:range rdf:resource="#Human"/>

    </owl:SymmetricProperty>

The domain and range of a symmetric property are the same.

Other information

Use in ISO 15926