Users' Mathboxes Mathbox for Alan Sare < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  iidn3 Unicode version

Theorem iidn3 27398
Description: idn3 27520 without virtual deduction connectives. Special theorem needed for Alan Sare's virtual deduction translation tool. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
iidn3  |-  ( ph  ->  ( ps  ->  ( ch  ->  ch ) ) )

Proof of Theorem iidn3
StepHypRef Expression
1 id 21 . 2  |-  ( ch 
->  ch )
21a1ii 26 1  |-  ( ph  ->  ( ps  ->  ( ch  ->  ch ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 6
This theorem is referenced by:  trintALT  27790
This theorem was proved from axioms:  ax-1 7  ax-2 8  ax-mp 10
  Copyright terms: Public domain W3C validator