Number in {..., โ2, โ1, 0, 1, 2, ...}
An integer is the number zero (0), a positive natural number (1, 2, 3, . . .), or the negation of a positive natural number (โ1, โ2, โ3, . . .). The negations or additive inverses of the positive natural numbers are referred to as negative integers. The set of all integers is often denoted by the boldface Z or blackboard bold