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Theorem truantru 1332
Description: A  /\ identity. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
truantru  |-  ( (  T.  /\  T.  )  <->  T.  )

Proof of Theorem truantru
StepHypRef Expression
1 anidm 628 1  |-  ( (  T.  /\  T.  )  <->  T.  )
Colors of variables: wff set class
Syntax hints:    <-> wb 178    /\ wa 360    T. wtru 1312
This theorem was proved from axioms:  ax-1 7  ax-2 8  ax-3 9  ax-mp 10
This theorem depends on definitions:  df-bi 179  df-an 362
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