Theorem 5nn0

Description: 5 is a nonnegative integer. (Contributed by Mario Carneiro, 19-Apr-2015)

	Ref	Expression
Assertion	5nn0	⊢ 5 ∈ ℕ0

Proof

Step	Hyp	Ref	Expression
1		5nn	⊢ 5 ∈ ℕ
2	1	nnnn0i	⊢ 5 ∈ ℕ0