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Formal Language:

Sigma KEE - TernaryFunction

KB Term:

三元函数

这是个需要恰好三个参数的 Function Class。

Relationships
Parents	函数	A Function is a term-forming Relation that maps from a n-tuple of arguments to a range and that associates this n-tuple with at most one range element. Note that the range is a SetOrClass, and each element of the range is an instance of the SetOrClass.
	可继承的关系	The class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
	四元关系	QuaternaryRelations relate four items. The two subclasses of QuaternaryRelation are QuaternaryPredicate and TernaryFunction.