Theorem renegi

Description: Real part of negative. (Contributed by NM, 2-Aug-1999)

	Ref	Expression
Hypothesis	recl.1	|- A e. CC
Assertion	renegi	|- ( Re ` -u A ) = -u ( Re ` A )

Proof

Step	Hyp	Ref	Expression
1		recl.1	|- A e. CC
2		reneg	|- ( A e. CC -> ( Re ` -u A ) = -u ( Re ` A ) )
3	1 2	ax-mp	|- ( Re ` -u A ) = -u ( Re ` A )