# Fractional part of a number

From Encyclopedia of Mathematics

A function defined for all real numbers $x$ and equal to the difference between $x$ and the integral part (entier) $[x]$ of the number $x$. It is usually denoted by $\{x\}$. Thus, $\{1.03\}=0.03$; $\{-1.25\}=0.75$; $\{\pi\}=0.1415926535\dots$.

**How to Cite This Entry:**

Fractional part of a number.

*Encyclopedia of Mathematics.*URL: http://www.encyclopediaofmath.org/index.php?title=Fractional_part_of_a_number&oldid=29219

This article was adapted from an original article by S.A. Stepanov (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article