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Definition df-fal 1543
Description: Definition of the truth value "false", or "falsum", denoted by . See also df-tru 1533. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
df-fal (⊥ ↔ ¬ ⊤)

Detailed syntax breakdown of Definition df-fal
StepHypRef Expression
1 wfal 1542 . 2 wff
2 wtru 1531 . . 3 wff
32wn 3 . 2 wff ¬ ⊤
41, 3wb 208 1 wff (⊥ ↔ ¬ ⊤)
Colors of variables: wff setvar class
This definition is referenced by:  fal  1544  nottru  1557  trunortru  1579  trunorfal  1581  empty  1900
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