Theorem 10nn0

Description: 10 is a nonnegative integer. (Contributed by Mario Carneiro, 19-Apr-2015) (Revised by AV, 6-Sep-2021)

	Ref	Expression
Assertion	10nn0	⊢ ; 1 0 ∈ ℕ0

Proof

Step	Hyp	Ref	Expression
1		1nn0	⊢ 1 ∈ ℕ0
2		0nn0	⊢ 0 ∈ ℕ0
3	1 2	deccl	⊢ ; 1 0 ∈ ℕ0