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Definition df-fal 1291
Description: Definition of the truth value "false", or "falsum", denoted by . See also df-tru 1288. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
df-fal (⊥ ↔ ¬ ⊤)

Detailed syntax breakdown of Definition df-fal
StepHypRef Expression
1 wfal 1290 . 2 wff
2 wtru 1286 . . 3 wff
32wn 3 . 2 wff ¬ ⊤
41, 3wb 103 1 wff (⊥ ↔ ¬ ⊤)
Colors of variables: wff set class
This definition is referenced by:  fal  1292  nottru  1345  bdfal  10782
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