Integer - Wikipedia
https://en.wikipedia.org/wiki/Integer
WebInteger. An integer is the number zero ( 0 ), a positive natural number (1, 2, 3, etc.) or a negative integer ( −1, −2, −3, etc.). [1] The negative numbers are the additive inverses of the corresponding positive numbers. [2] The set of all integers is often denoted by the boldface Z or blackboard bold .
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