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 Sigma KEE - Function

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函数
Function 是一个造词的 Relation，它以最多一个元素 范围，把n元组的参数和这n元组有关的范围联系起来。注：范围是一个SetOrClass，而且范围内的每个元素是这个 SetOrClass 的一个实例。
Relationships      
Parents 可继承的关系 The class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
  单值关系 A Relation is a SingleValuedRelation just in case an assignment of values to every argument position except the last one determines at most one assignment for the last argument position. Note that not all SingleValuedRelations are TotalValuedRelations.
Children 二元函数The Class of Functions that require two arguments.
 连续函数Functions which are continuous. This concept is taken as primitive until representations for limits are devised.
 四元函数The Class of Functions that require exactly four arguments.
 三元函数The Class of Functions that require exactly three arguments.
 一元函数The Class of Functions that require a single argument.
Instances分派函数如果F是一个 Function，它所代表物体的值以 N1，...，NK表示， 那么 (AssignmentFn F N1 ... NK) 就是应用F到这些物体以N1,..., NK所代表的值。 在其他情况下，这个值是没有被下定义的。
 最大公因数函数(GreatestCommonDivisorFn ?NUMBER1 ?NUMBER2 ... ?NUMBER)得出 ?NUMBER1 到 ?NUMBER 的最大公约数。
 纬度LatitudeFn is a VariableArityRelation used to denote a parallel of latitude. Examples: (LatitudeFn North (MeasureFn 38.0 AngularDegree)), (LatitudeFn South (MeasureFn 23.0 AngularDegree) (MeasureFn 30.0 ArcMinute)), (LatitudeFn South (MeasureFn 60.0 AngularDegree) (MeasureFn 0.0 ArcMinute) (MeasureFn 0.0 ArcSecond)), (LatitudeFn North (MeasureFn 42.0 AngularDegree) (MeasureFn 7.89 ArcMinute)).
 最小公倍数函数(LeastCommonMultipleFn ?NUMBER1 ?NUMBER2 ... ?NUMBER) 得出 ?NUMBER1 到 ?NUMBER 的最小公倍数。
 表列函数这是一个可以接受任何数量的参数，然后交出含有跟哪些参数完全 相同顺序的 Function。
 经度(LongitudeFn ?DIRECTION @ROW) denotes a meridian of longitude. Note that LongitudeFn is a VariableArityRelation. Examples: (LongitudeFn East (MeasureFn 180.0 AngularDegree)), (LongitudeFn West (MeasureFn 122.0 AngularDegree) (MeasureFn 24.0 ArcMinute)), (LongitudeFn East (MeasureFn 121.0 AngularDegree) (MeasureFn 0.0 ArcMinute) (MeasureFn 15.0 ArcSecond)), (LongitudeFn West (MeasureFn 80.0 AngularDegree) (MeasureFn 6.78 ArcMinute)).


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