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Theorem truanfal 1293
Description: A identity. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
truanfal ((⊤ ∧ ⊥) ↔ ⊥)

Proof of Theorem truanfal
StepHypRef Expression
1 truan 1260 1 ((⊤ ∧ ⊥) ↔ ⊥)
Colors of variables: wff set class
Syntax hints:  wa 97  wb 98  wtru 1244  wfal 1248
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101
This theorem depends on definitions:  df-bi 110  df-tru 1246
This theorem is referenced by: (None)
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