# Integer

## Integer

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}.
$$\mathbb{Z}_{+}=\mathbb{N}$$.