Theorem imp44 348

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

Hypothesis

Ref	Expression
imp4.1	|- ( ph -> ( ps -> ( ch -> ( th -> ta ) ) ) )

Assertion

Ref	Expression
imp44	|- ( ( ph /\ ( ( ps /\ ch ) /\ th ) ) -> ta )

Proof of Theorem imp44

Step	Hyp	Ref	Expression
1		imp4.1	. . 3 |- ( ph -> ( ps -> ( ch -> ( th -> ta ) ) ) )
2	1	imp4c 343	. 2 |- ( ph -> ( ( ( ps /\ ch ) /\ th ) -> ta ) )
3	2	imp 122	1 |- ( ( ph /\ ( ( ps /\ ch ) /\ th ) ) -> ta )

Syntax hints:   -> wi 4   /\ wa 102

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105

This theorem is referenced by:  imp511  354