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

Definition df-fal 1265
Description: Definition of the truth value "false", or "falsum", denoted by F.. See also df-tru 1262. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
df-fal  |-  ( F.  <->  -. T.  )

Detailed syntax breakdown of Definition df-fal
StepHypRef Expression
1 wfal 1264 . 2  wff F.
2 wtru 1260 . . 3  wff T.
32wn 3 . 2  wff  -. T.
41, 3wb 102 1  wff  ( F.  <->  -. T.  )
Colors of variables: wff set class
This definition is referenced by:  fal  1266  nottru  1320  bdfal  10319
  Copyright terms: Public domain W3C validator