Theorem nngt0i

Description: A positive integer is positive (inference version). (Contributed by NM, 17-Sep-1999)

	Ref	Expression
Hypothesis	nngt0.1	⊢ 𝐴 ∈ ℕ
Assertion	nngt0i	⊢ 0 < 𝐴

Proof

Step	Hyp	Ref	Expression
1		nngt0.1	⊢ 𝐴 ∈ ℕ
2		nngt0	⊢ ( 𝐴 ∈ ℕ → 0 < 𝐴 )
3	1 2	ax-mp	⊢ 0 < 𝐴