The integers are formed by the natural numbers (including 0) (0
0 (number)
0 is both a numberand the numerical digit used to represent that number in numerals.It fulfills a central role in mathematics as the additive identity of the integers, real numbers, and many other algebraic structures. As a digit, 0 is used as a placeholder in place value systems...

, 1, 2, 3, ...) together with the negatives of the non-zero natural numbers (−1, −2, −3, ...).They are known as Positive and Negative Integers respectively.
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