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Theorem alfal 1811
Description: For all sets, ¬ ⊥ is true. (Contributed by Anthony Hart, 13-Sep-2011.)
Assertion
Ref Expression
alfal 𝑥 ¬ ⊥

Proof of Theorem alfal
StepHypRef Expression
1 fal 1553 . 2 ¬ ⊥
21ax-gen 1798 1 𝑥 ¬ ⊥
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wal 1537  wfal 1551
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798
This theorem depends on definitions:  df-bi 206  df-tru 1542  df-fal 1552
This theorem is referenced by:  nalfal  34592
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