Theorem cjnegi

Description: Complex conjugate of negative. (Contributed by NM, 2-Aug-1999)

	Ref	Expression
Hypothesis	recl.1	$$⊢A\in ℂ$$
Assertion	cjnegi	$$⊢\overline{-A}=-\bar{A}$$

Proof

Step	Hyp	Ref	Expression
1		recl.1	$$⊢A\in ℂ$$
2		cjneg	$$⊢A\in ℂ\to \overline{-A}=-\bar{A}$$
3	1 2	ax-mp	$$⊢\overline{-A}=-\bar{A}$$