Integers
An integer is a natural number that is either positive or negative. It is denoted as the set $\mathbb{Z}$, and can be expressed as: $\mathbb{Z} = \{-x | x \in \mathbb{N}\} \cup \mathbb{N}_0.$
An integer is a natural number that is either positive or negative. It is denoted as the set $\mathbb{Z}$, and can be expressed as: $\mathbb{Z} = \{-x | x \in \mathbb{N}\} \cup \mathbb{N}_0.$