Theorem cdeqth

Description: Deduce conditional equality from a theorem. (Contributed by Mario Carneiro, 11-Aug-2016)

	Ref	Expression
Hypothesis	cdeqth.1	|- ph
Assertion	cdeqth	|- CondEq ( x = y -> ph )

Proof

Step	Hyp	Ref	Expression
1		cdeqth.1	|- ph
2	1	a1i	|- ( x = y -> ph )
3	2	cdeqi	|- CondEq ( x = y -> ph )