Theorem qcn

Description: A rational number is a complex number. (Contributed by NM, 2-Aug-2004)

	Ref	Expression
Assertion	qcn	⊢ ( 𝐴 ∈ ℚ → 𝐴 ∈ ℂ )

Proof

Step	Hyp	Ref	Expression
1		qsscn	⊢ ℚ ⊆ ℂ
2	1	sseli	⊢ ( 𝐴 ∈ ℚ → 𝐴 ∈ ℂ )