Theorem bnj707

Description: /\ -manipulation. (Contributed by Jonathan Ben-Naim, 3-Jun-2011) (New usage is discouraged.)

	Ref	Expression
Hypothesis	bnj707.1	|- ( ch -> ta )
Assertion	bnj707	|- ( ( ph /\ ps /\ ch /\ th ) -> ta )

Proof

Step	Hyp	Ref	Expression
1		bnj707.1	|- ( ch -> ta )
2		bnj258	|- ( ( ph /\ ps /\ ch /\ th ) <-> ( ( ph /\ ps /\ th ) /\ ch ) )
3	2	simprbi	|- ( ( ph /\ ps /\ ch /\ th ) -> ch )
4	3 1	syl	|- ( ( ph /\ ps /\ ch /\ th ) -> ta )