Theorem impr 602

Description: Import a wff into a right conjunct. (Contributed by Jeff Hankins, 30-Aug-2009.)

Hypothesis

Ref	Expression
impr.1	|- ((ph /\ ps) -> (ch -> th))

Assertion

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

Proof of Theorem impr

Step	Hyp	Ref	Expression
1		impr.1	. . 3 |- ((ph /\ ps) -> (ch -> th))
2	1	ex 423	. 2 |- (ph -> (ps -> (ch -> th)))
3	2	imp32 422	1 |- ((ph /\ (ps /\ ch)) -> th)

Syntax hints:   -> wi 4   /\ wa 358

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 177  df-an 360

This theorem is referenced by:  moi2  3018  preq12bg  4129  prepeano4  4452  f1o2d  5728  fndmeng  6047  enprmaplem3  6079  nchoicelem4  6293  fnfrec  6321