Relationships




Parents 
数字 
A measure of how many things there are, or how much there is, of a certain kind. Numbers are subclassed into RealNumber, ComplexNumber, and ImaginaryNumber.

Children 
二进制数  Elements from the number system with base 2. Every BinaryNumber is expressed as a sequence of the digits 1 and 0. 
 无理数  Any RealNumber that is not also a RationalNumber. 
 负实数  A RealNumber that is less than zero. 
 非负实数  A RealNumber that is greater than or equal to zero. 
 有理数  Any RealNumber that is the product of dividing two Integers. 