Theorem recni

Description: A real number is a complex number. (Contributed by NM, 1-Mar-1995)

	Ref	Expression
Hypothesis	recni.1	⊢ 𝐴 ∈ ℝ
Assertion	recni	⊢ 𝐴 ∈ ℂ

Proof

Step	Hyp	Ref	Expression
1		recni.1	⊢ 𝐴 ∈ ℝ
2		ax-resscn	⊢ ℝ ⊆ ℂ
3	2 1	sselii	⊢ 𝐴 ∈ ℂ