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Difference between revisions of "Real number"
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Revision as of 10:31, 22 January 2019
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.