Theorem ad2antrr

Description: Deduction adding two conjuncts to antecedent. (Contributed by NM, 19-Oct-1999) (Proof shortened by Wolf Lammen, 20-Nov-2012)

	Ref	Expression
Hypothesis	ad2ant.1	|- ( ph -> ps )
Assertion	ad2antrr	|- ( ( ( ph /\ ch ) /\ th ) -> ps )

Proof

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