Definition:Floor Function/Definition 3

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Let $x$ be a real number.

The floor function of $x$ is the unique integer $\floor x$ such that:

$\floor x \le x < \floor x + 1$

Also see

Technical Note

The $\LaTeX$ code for \(\floor {x}\) is \floor {x} .

When the argument is a single character, it is usual to omit the braces:

\floor x