Theorem 2nn0

Description: 2 is a nonnegative integer. (Contributed by Raph Levien, 10-Dec-2002)

	Ref	Expression
Assertion	2nn0	$$⊢2\in {\mathbb{N}}_0$$

Proof

Step	Hyp	Ref	Expression
1		2nn	$$⊢2\in \mathbb{N}$$
2	1	nnnn0i	$$⊢2\in {\mathbb{N}}_0$$