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Sigma KEE - BinaryRelation
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relation binaire
BinaryRelations are relations that are true only of pairs of things. BinaryRelations are represented as slots in frame systems.
Relationships      
Parents InheritableRelation The class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
  relation The Class of relations. There are two kinds of Relation: Predicate and Function. Predicates and Functions both denote sets of ordered n-tuples. The difference between these two Classes is that Predicates cover formula-forming operators, while Functions cover term-forming operators.
Children relation antisym�triqueBinaryRelation ?REL is an AntisymmetricRelation if for distinct ?INST1 and ?INST2, (?REL ?INST1 ?INST2) implies not (?REL ?INST2 ?INST1). In other words, for all ?INST1 and ?INST2, (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST1) imply that ?INST1 and ?INST2 are identical. Note that it is possible for an AntisymmetricRelation to be a ReflexiveRelation.
 pr�dicat binaireA Predicate relating two items - its valence is two.
 EconomicRelationA class of Relations which are used to specify various economic measures, e.g. the GDP, the consumer price index, and the trade deficit.
 relation intransitiveA BinaryRelation ?REL is intransitive only if (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST3) imply not (?REL ?INST1 ?INST3), for all ?INST1, ?INST2, and ?INST3.
 relation irr�flexiveRelation ?REL is irreflexive iff (?REL ?INST ?INST) holds for no value of ?INST.
 relation r�flexiveRelation ?REL is reflexive iff (?REL ?INST ?INST) for all ?INST.
 relation sym�triqueA BinaryRelation ?REL is symmetric just iff (?REL ?INST1 ?INST2) imples (?REL ?INST2 ?INST1), for all ?INST1 and ?INST2.
 relation transitiveA BinaryRelation ?REL is transitive if (?REL ?INST1 ?INST2) and (?REL ?INST2 ?INST3) imply (?REL ?INST1 ?INST3), for all ?INST1, ?INST2, and ?INST3.
 relation trichotomiqueA BinaryRelation ?REL is a TrichotomizingRelation just in case all ordered pairs consisting of distinct individuals are elements of ?REL.
 function unaireThe Class of Functions that require a single argument.


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