The set of integers and natural numbers have symbols for them:
$\mathbb{Z}$ = integers = {$\ldots, -2, -1, 0, 1, 2, \ldots$}
$\mathbb{N}$ = natural numbers ($\mathbb{Z^+}$) = {$1, 2, 3, \ldots$}
Even though there appears to be some confusion as to exactly What are the "whole numbers"?, my question is what is the symbol to represent the set $0, 1, 2, \ldots $. I have not seen $\mathbb{W}$ used so wondering if there is another symbol for this set, or if this set does not have an official symbol associated with it.