Number that belongs to the set \(\mathbb{Z}=\left\{ \ldots ,-3,-2,-1,0,1,2,3,\ldots \right\}\).

Positive or negative number for which the absolute value is a whole number.

- Synonym of
*relative integer*. - The set of integers is:

\(\mathbb{Z} = {…, -4, -3, -2, -1, 0, 1, 2, 3, 4, …}\).

### Symbols

The set of integers is represented by the letter \(\mathbb{Z}\).

\(\mathbb{Z}^{*}=\mathbb{Z}\) \ {0}.

\(\mathbb{Z}_{+}=\mathbb{N}\).