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Entity > Abstract > Quantity > Number > ImaginaryNumber
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ImaginaryNumber comparison table
Subject is an instance of documentation is a kind of have axiom
Number A measure of how many things there are, or how much there is, of a certain kind. Numbers are subclassed into RealNumber and ComplexNumber (ImaginaryNumber is an instance of Number)Quantity
(<=> 
(instance ?ABS Abstract)
(not
(exists (?POINT)
(or
(located ?ABS ?POINT)
(existant ?ABS ?POINT)))))
ImaginaryNumberNumberThe square root of -1 
(=>
(instance ?NUMBER ImaginaryNumber)
(instance ?NUMBER (RelativeComplementFn Number RealNumber)))

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