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Sigma KEE  IrreflexiveRelation
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irreflexive relation
Relation
?REL is irreflexive iff (?REL ?INST ?INST) holds for no value of ?INST.
Relationships
Parents
binary relation
BinaryRelation
s are relations that are true only of pairs of things.
BinaryRelation
s are represented as slots in frame systems.
Children
asymmetric relation
A
BinaryRelation
is asymmetric if and only if it is both an
AntisymmetricRelation
and an
IrreflexiveRelation
.
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