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Entity > Abstract > Class > Relation > BinaryRelation > UnaryFunction > SuccessorFn
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SuccessorFn comparison table
Subject have domain1 have range documentation have axiom is a kind of is an instance of
UnaryFunction  The Class of Functions that require a single argument
(=>
(instance ?FUNCTION UnaryFunction)
(valence ?FUNCTION 1))
Function 
SuccessorFnIntegerIntegerA UnaryFunction that maps an Integer to its successor, e.g. the successor of 5 is 6
(=>
(instance ?INT Integer)
(lessThan ?INT (SuccessorFn ?INT)))
 UnaryFunction

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