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Definition df-fal 1320
Description: Definition of , a contradiction. is a constant false. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
df-fal

Detailed syntax breakdown of Definition df-fal
StepHypRef Expression
1 wfal 1317 . 2
2 wtru 1316 . . 3
32wn 3 . 2
41, 3wb 176 1
Colors of variables: wff setvar class
This definition is referenced by:  fal  1322  nottru  1348
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