1.

Write set of integers with symbol​

Answer»

Symbol. The symbol ℤ can be annotated to denote various sets, with VARYING usage amongst different AUTHORS: ℤ+, ℤ+ or ℤ> for the POSITIVE integers, ℤ0+ or ℤ≥ for non-negative integers, and ℤ≠ for non-zero integers. Some authors USE ℤ* for non-zero integers, while others use it for non-negative integers, or for {–1, 1}.



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