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Relation: subclass

Number19A measure of how many things there are, or how much there is, of a certain kind. Numbers are subc...^
    RealNumber15Any Number that can be expressed as a (possibly infinite) decimal, i.e. any Number that has a p...^
        RationalNumber7Any RealNumber that is the product of dividing two Integers.^
        IrrationalNumber.Any RealNumber that is not also a RationalNumber.^
        NonnegativeRealNumber5A RealNumber that is greater than or equal to zero.^
        NegativeRealNumber1A RealNumber that is less than zero.^
        BinaryNumber.Elements from the number system with base 2. Every BinaryNumber is expressed as a sequence of the...^

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