# Quick notation question

by strokebow
Tags: notation
 P: 101 Hi, I want to be able to say the following with mathematical symbols; 1) A is any integer. 2) A is a non-integer (not a whole number). Please help. Thanks
 PF Patron HW Helper Sci Advisor Thanks P: 11,935 For example: 1) $$A\in\mathcal{Z}$$ 2) $$A\notin\mathcal{Z}$$
 P: 170 $A$ is an integer: $A\in\mathbb Z$. $A$ is not an integer: $A\notin\mathbb Z$. $A$ is a real number which is not an integer: $A\in\mathbb R\backslash\mathbb Z$. $A$ is not a whole number: $A\notin\mathbb Z_+$.

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