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Entity > Abstract > Class > Relation > BinaryRelation > BinaryPredicate > connected
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connected comparison table
Subject have domain2 have domain1 be first domain of be second domain of documentation have axiom is a kind of is an instance of
BinaryPredicate  singleValuedinverseA Predicate relating two items - its valence is two
(=>
(instance ?REL BinaryPredicate)
(valence ?REL 2))
Predicate 
ReflexiveRelation  trichotomizingOninverseRelation ?REL is reflexive if (?REL ?INST ?INST) for all ?INST
(=>
(instance ?REL ReflexiveRelation)
(forall (?INST)
(holds ?REL ?INST ?INST)))
BinaryRelation 
SpatialRelation  valencesubrelationThe Class of Relations that are spatial in a wide sense. This Class includes mereological relations, topological relations, and positional relations
(=>
(and
(instance ?REL SpatialRelation)
(holds ?REL ?OBJ1 ?OBJ2))
(overlapsTemporally (WhenFn ?OBJ1) (WhenFn ?OBJ2)))
Relation 
SymmetricRelation  trichotomizingOninverseA BinaryRelation ?REL is symmetric just in case (?REL ?INST1 ?INST2) imples (?REL ?INST2 ?INST1), for all ?INST1 and ?INST2
(=>
(instance ?REL SymmetricRelation)
(forall (?INST1 ?INST2)
(=>
(holds ?REL ?INST1 ?INST2)
(holds ?REL ?INST2 ?INST2))))
BinaryRelation 
connectedObjectObjectvalencesubrelation(connected ?OBJ1 ?OBJ2) means that ?OBJ1 meetsSpatially ?OBJ2 or that ?OBJ1 overlapsSpatially ?OBJ2
(=>
(crosses ?OBJ1 ?OBJ2)
(not
(connected ?OBJ1 ?OBJ2)))
 SymmetricRelation

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