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Theorem truanfal 1420
Description: A /\ identity. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
truanfal

Proof of Theorem truanfal
StepHypRef Expression
1 truan 1412 1
Colors of variables: wff setvar class
Syntax hints:  <->wb 184  /\wa 369   wtru 1396   wfal 1400
This theorem is referenced by:  trunanfal  1438
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 185  df-an 371  df-tru 1398
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