Theorem ad3antrrr

Description: Deduction adding three conjuncts to antecedent. (Contributed by NM, 28-Jul-2012)

	Ref	Expression
Hypothesis	ad2ant.1	|- ( ph -> ps )
Assertion	ad3antrrr	|- ( ( ( ( ph /\ ch ) /\ th ) /\ ta ) -> ps )

Proof

Step	Hyp	Ref	Expression
1		ad2ant.1	|- ( ph -> ps )
2	1	adantr	|- ( ( ph /\ ch ) -> ps )
3	2	ad2antrr	|- ( ( ( ( ph /\ ch ) /\ th ) /\ ta ) -> ps )