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Real number

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A real number is either a rational number or an irrational number. The set of real numbers is denoted by [math]\displaystyle{ \mathbb{R} }[/math].

Formally, [math]\displaystyle{ \mathbb{R} }[/math] can be constructed from [math]\displaystyle{ \mathbb{Q} }[/math], the set of rational numbers using Dedekind cuts.

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Number classes
General numbers
Special numbers
Prime numbers