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Entity > Abstract > Class > Relation > BinaryRelation > AntisymmetricRelation > AsymmetricRelation > duration
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duration comparison table
Subject have domain2 have domain1 be first domain of documentation have axiom is a kind of is an instance of
AsymmetricRelation  trichotomizingOnA BinaryRelation is asymmetric only if it is both an AntisymmetricRelation and an IrreflexiveRelation
(=>
(instance ?REL IrreflexiveRelation)
(forall (?INST)
(not
(holds ?REL ?INST ?INST))))
IrreflexiveRelation 
BinaryPredicate  singleValuedA Predicate relating two items - its valence is two
(=>
(instance ?REL BinaryPredicate)
(valence ?REL 2))
Predicate 
durationTimeDurationTimePositionsingleValued(duration ?POS ?TIME) means that the duration of the TimePosition ?POS is ?TIME. Note that this Predicate can be used in conjunction with the Function WhenFn to specify the duration of any instance of Physical
(=>
(instance ?YEAR Year)
(duration ?YEAR YearDuration))
 BinaryPredicate

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