Theorem nn0re

Description: A nonnegative integer is a real number. (Contributed by NM, 9-May-2004)

	Ref	Expression
Assertion	nn0re	⊢ ( 𝐴 ∈ ℕ0 → 𝐴 ∈ ℝ )

Proof

Step	Hyp	Ref	Expression
1		nn0ssre	⊢ ℕ0 ⊆ ℝ
2	1	sseli	⊢ ( 𝐴 ∈ ℕ0 → 𝐴 ∈ ℝ )