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Theorem truantru 1336
Description: A identity. (Contributed by Anthony Hart, 22-Oct-2010.)
Assertion
Ref Expression
truantru (( ⊤ ⊤ ) ↔ ⊤ )

Proof of Theorem truantru
StepHypRef Expression
1 anidm 625 1 (( ⊤ ⊤ ) ↔ ⊤ )
Colors of variables: wff setvar class
Syntax hints:  wb 176   wa 358  wtru 1316
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
This theorem is referenced by: (None)
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