mapping rule for InverseFunctionalProperty etc

From: Jeremy Carroll <jjc@hpl.hp.com> Date: Mon, 15 Sep 2003 15:59:12 +0300 To: www-webont-wg@w3.org Message-Id: <200309151559.12283.jjc@hpl.hp.com> · This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 21:56:55 UTC

This is a comment on
http://www.w3.org/TR/2003/CR-owl-semantics-20030818/mapping.html#4.1

The mappjng rule for
ObjectProperty( ID InverseFunctional )

=>

ID rdf:type owl:ObjectProperty . 
    [opt if one of the last three triples is included] 
ID rdf:type owl:InverseFunctionalProperty .

Does not appear to achieve the apparent desired effect.

Because while

eg:foo rdf:type owl:InverseFunctionalProperty .

is hence a legal OWL Lite ontology, the following is not

_:a rdf:type owl:Thing .
_:a eg:foo _:b .
_:b rdf:type owl:Thing .
eg:foo rdf:type owl:InverseFunctionalProperty .

Because the first three triples appear to correspond to:
Individual( value(eg:foo,individual() ) )
whose mapping includes
eg:foo rdf:type owl:ObjectProperty .

Jeremy