Theorem absnegi

Description: Absolute value of negative. (Contributed by NM, 2-Aug-1999)

	Ref	Expression
Hypothesis	absvalsqi.1	|- A e. CC
Assertion	absnegi	|- ( abs ` -u A ) = ( abs ` A )

Proof

Step	Hyp	Ref	Expression
1		absvalsqi.1	|- A e. CC
2		absneg	|- ( A e. CC -> ( abs ` -u A ) = ( abs ` A ) )
3	1 2	ax-mp	|- ( abs ` -u A ) = ( abs ` A )