Theorem simp23r

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012)

	Ref	Expression
Assertion	simp23r	|- ( ( ta /\ ( ch /\ th /\ ( ph /\ ps ) ) /\ et ) -> ps )

Proof

Step	Hyp	Ref	Expression
1		simp3r	|- ( ( ch /\ th /\ ( ph /\ ps ) ) -> ps )
2	1	3ad2ant2	|- ( ( ta /\ ( ch /\ th /\ ( ph /\ ps ) ) /\ et ) -> ps )