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Theorem alnof 25868
Description: For all sets,  F. is not true. (Contributed by Anthony Hart, 13-Sep-2011.)
Assertion
Ref Expression
alnof  |-  A. x  -.  F.

Proof of Theorem alnof
StepHypRef Expression
1 fal 1328 . 2  |-  -.  F.
21ax-gen 1552 1  |-  A. x  -.  F.
Colors of variables: wff set class
Syntax hints:   -. wn 3    F. wfal 1323   A.wal 1546
This theorem is referenced by:  nalf  25869
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1552
This theorem depends on definitions:  df-bi 178  df-tru 1325  df-fal 1326
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