Theorem cjcl

Description: The conjugate of a complex number is a complex number (closure law). (Contributed by NM, 10-May-1999) (Revised by Mario Carneiro, 6-Nov-2013)

	Ref	Expression
Assertion	cjcl	$$⊢A\in ℂ\to \bar{A}\in ℂ$$

Proof

Step	Hyp	Ref	Expression
1		cjf	$$⊢*:ℂ⟶ℂ$$
2	1	ffvelrni	$$⊢A\in ℂ\to \bar{A}\in ℂ$$