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Theorem falanfal 1329
Description: A  /\ identity. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
falanfal  |-  ( (  F.  /\  F.  )  <->  F.  )

Proof of Theorem falanfal
StepHypRef Expression
1 anidm 625 1  |-  ( (  F.  /\  F.  )  <->  F.  )
Colors of variables: wff set class
Syntax hints:    <-> wb 176    /\ wa 358    F. wfal 1308
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8
This theorem depends on definitions:  df-bi 177  df-an 360
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