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Sigma KEE  NonnegativeInteger
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nonnegative integer
An
Integer
that is greater than or equal to zero.
Relationships
Parents
integer
A negative or nonnegative whole number.
nonnegative real number
A
RealNumber
that is greater than or equal to zero.
Children
positive integer
An
Integer
that is greater than zero.
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Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners