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Definition df-fal 1291
Description: Definition of the truth value "false", or "falsum", denoted by F.. See also df-tru 1288. (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 1290 . 2  wff F.
2 wtru 1286 . . 3  wff T.
32wn 3 . 2  wff  -. T.
41, 3wb 103 1  wff  ( F.  <->  -. T.  )
Colors of variables: wff set class
This definition is referenced by:  fal  1292  nottru  1345  bdfal  11065
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