Theorem 3ad2ant1

Description: Deduction adding conjuncts to an antecedent. (Contributed by NM, 21-Apr-2005)

	Ref	Expression
Hypothesis	3ad2ant.1	|- ( ph -> ch )
Assertion	3ad2ant1	|- ( ( ph /\ ps /\ th ) -> ch )

Proof

Step	Hyp	Ref	Expression
1		3ad2ant.1	|- ( ph -> ch )
2	1	adantr	|- ( ( ph /\ th ) -> ch )
3	2	3adant2	|- ( ( ph /\ ps /\ th ) -> ch )