Theorem imp32

Description: An importation inference. (Contributed by NM, 26-Apr-1994)

	Ref	Expression
Hypothesis	imp31.1	|- ( ph -> ( ps -> ( ch -> th ) ) )
Assertion	imp32	|- ( ( ph /\ ( ps /\ ch ) ) -> th )

Proof

Step	Hyp	Ref	Expression
1		imp31.1	|- ( ph -> ( ps -> ( ch -> th ) ) )
2	1	impd	|- ( ph -> ( ( ps /\ ch ) -> th ) )
3	2	imp	|- ( ( ph /\ ( ps /\ ch ) ) -> th )