The best symbol for non-negative integers? I would like to specify the set $\{0, 1, 2, \dots\}$, i.e., non-negative integers in an engineering conference paper. Which symbol is more preferable?

*

*$\mathbb{N}_0$

*$\mathbb{N}\cup\{0\}$

*$\mathbb{Z}_{\ge 0}$

*$\mathbb{Z}_{+}$

*$\mathbb{Z}_{0+}$

*$\mathbb{Z}_{*}$

*$\mathbb{Z}_{\geq}$

Based on this similar post, the following seems to be preferred:
$\mathbb{Z}_{\geq 0}$
