   Number
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Sigma KEE - Number
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Quantity |
Any specification of how many or how much of something there is. Accordingly, there are two subclasses of Quantity: Number (how many) and PhysicalQuantity (how much).
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ComplexNumber | A Number that has the form: x + yi, where x and y are RealNumbers and i is the square root of -1. | | | ImaginaryNumber | Any Number that is the result of multiplying a RealNumber by the square root of -1. | | | 多極變量 | a variable that describes energetical interactions between multipoles. | | | RealNumber | Any Number that can be expressed as a (possibly infinite) decimal, i.e. any Number that has a position on the number line. |
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