ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  falimtru Unicode version

Theorem falimtru 1343
Description: A  -> identity. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
falimtru  |-  ( ( F.  -> T.  )  <-> T.  )

Proof of Theorem falimtru
StepHypRef Expression
1 falim 1299 . 2  |-  ( F. 
-> T.  )
21bitru 1297 1  |-  ( ( F.  -> T.  )  <-> T.  )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 103   T. wtru 1286   F. wfal 1290
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-in1 577  ax-in2 578
This theorem depends on definitions:  df-bi 115  df-tru 1288  df-fal 1291
This theorem is referenced by:  trubifal  1348
  Copyright terms: Public domain W3C validator