Theorem 3impib

Description: Importation to triple conjunction. (Contributed by NM, 13-Jun-2006)

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

Proof

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