Relation Has-One-Of-Type

• Defined in ontology: Slot-constraint-sugar
• Source pathname: /tmp_mnt/vol/q/htw/cms/ontolingua/examples/ontolingua/../../all-ontologies/ontolingua/slot-constraint-sugar.lisp

Instance-Of: Relation, Set

Subrelation-Of: Value-Type

Arity: 3

Documentation:

A relation R HAS-ONE-OF-TYPE T on domain instance d if there exists exactly one t such that R(c,t) and t is an instance of T.

Notes:

• See-Also: has-single-slot-value-of-type

Implication Axioms for Has-One-Of-Type:

(=> (Has-One-Of-Type ?Instance ?Binary-Relation ?Type)
    (Value-Type ?Instance ?Binary-Relation ?Type))

Equivalence Axioms for Has-One-Of-Type:

(<=> (Has-One-Of-Type ?Instance ?Binary-Relation ?Type)
     (And (Binary-Relation ?Binary-Relation)
          (Class ?Type)
          (= (Value-Cardinality ?Instance ?Binary-Relation) 1)
          (Value-Type ?Instance ?Binary-Relation ?Type)))

Axioms for Has-One-Of-Type:

(Binary-Relation ?Binary-Relation)

(Nth-Domain Has-One-Of-Type 3 Class)

(Nth-Domain Has-One-Of-Type 2 Binary-Relation)