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Sigma KEE - SetOrClass
KB Term: 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
ensemble ou classe
The SetOrClass of Sets and Classes, i.e. any instance of Abstract that has elements or instances.
Relationships      
Parents abstrait Properties or qualities as distinguished from any particular embodiment of the properties/qualities in a physical medium. Instances of Abstract can be said to exist in the same sense as mathematical objects such as sets and relations, but they cannot exist at a particular place and time without some physical encoding or embodiment.
Children ensembleA SetOrClass that satisfies extensionality as well as other constraints specified by some choice of set theory. Sets differ from Classes in two important respects. First, Sets are extensional - two Sets with the same elements are identical. Second, a Set can be an arbitrary stock of objects. That is, there is no requirement that Sets have an associated condition that determines their membership. Note that Sets are not assumed to be unique sets, i.e. elements of a Set may occur more than once in the Set.


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