Fractional part of a number

From Encyclopedia of Mathematics
Jump to: navigation, search

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