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Sigma KEE  QuaternaryFunction
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四元函数
这是个需要恰好四个参数的
Function
Class
。
Relationships
Parents
函数
A
Function
is a termforming
Relation
that maps from a ntuple of arguments to a range and that associates this ntuple 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
Relation
s whose properties can be inherited downward in the class hierarchy via the
subrelation
Predicate
.
五元关系
QuintaryRelation
s relate five items. The two
subclass
es of
QuintaryRelation
are
QuintaryPredicate
and
QuaternaryFunction
.
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Sigma version 2.99c (>= 2017/11/20) is
open source software
produced by
Articulate Software
and its partners