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  SymmetricRelation

 Sigma KEE - SymmetricRelation
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
对称关系
一个 BinaryRelation ?REL 属于对称关系只是 当且仅当所有的 ?INST1 和 ?INST2 是 (?REL ?INST1 ?INST2) 意味着 (?REL ?INST2 ?INST1)。
Relationships      
Parents 二元关系 BinaryRelations are relations that are true only of pairs of things. BinaryRelations are represented as slots in frame systems.
Children 等价关系A BinaryRelation is an equivalence relation if it is a ReflexiveRelation, a SymmetricRelation, and a TransitiveRelation.


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