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Theorem imp5q 26221
Description: A triple importation inference. (Contributed by Jeff Hankins, 8-Jul-2009.)
Hypothesis
Ref Expression
3imp5.1  |-  ( ph  ->  ( ps  ->  ( ch  ->  ( th  ->  ( ta  ->  et )
) ) ) )
Assertion
Ref Expression
imp5q  |-  ( (
ph  /\  ps )  ->  ( ( ch  /\  th 
/\  ta )  ->  et ) )

Proof of Theorem imp5q
StepHypRef Expression
1 3imp5.1 . . 3  |-  ( ph  ->  ( ps  ->  ( ch  ->  ( th  ->  ( ta  ->  et )
) ) ) )
21imp 418 . 2  |-  ( (
ph  /\  ps )  ->  ( ch  ->  ( th  ->  ( ta  ->  et ) ) ) )
323impd 1165 1  |-  ( (
ph  /\  ps )  ->  ( ( ch  /\  th 
/\  ta )  ->  et ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358    /\ w3a 934
This theorem is referenced by:  elicc3  26228
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8
This theorem depends on definitions:  df-bi 177  df-an 360  df-3an 936
  Copyright terms: Public domain W3C validator