Metamath Proof Explorer


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