The set of integer numbers, represented by the symbol Z,\mathbb{Z}, is formed by the number zero and all positive and negative numbers that do not contain any decimal parts.

Z={-2,-1,0,1,2}\mathbb{Z}=\{\ldots\text{-} 2, \text{-} 1, 0,1,2\ldots\}

The set contains infinitely many numbers and can be described as shown above; the dots indicate that the set continues to increase or decrease by one step at a time indefinitely.

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