Theorem anc2li

Description: Deduction conjoining antecedent to left of consequent in nested implication. (Contributed by NM, 10-Aug-1994) (Proof shortened by Wolf Lammen, 7-Dec-2012)

	Ref	Expression
Hypothesis	anc2li.1	|- ( ph -> ( ps -> ch ) )
Assertion	anc2li	|- ( ph -> ( ps -> ( ph /\ ch ) ) )

Proof

Step	Hyp	Ref	Expression
1		anc2li.1	|- ( ph -> ( ps -> ch ) )
2		id	|- ( ph -> ph )
3	1 2	jctild	|- ( ph -> ( ps -> ( ph /\ ch ) ) )