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Theorem a1tru 1347
Description: Anything implies T.. (Contributed by FL, 20-Mar-2011.) (Proof shortened by Anthony Hart, 1-Aug-2011.)
Assertion
Ref Expression
a1tru  |-  ( ph  -> T.  )

Proof of Theorem a1tru
StepHypRef Expression
1 tru 1335 . 2  |- T.
21a1i 9 1  |-  ( ph  -> T.  )
Colors of variables: wff set class
Syntax hints:    -> wi 4   T. wtru 1332
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107
This theorem depends on definitions:  df-bi 116  df-tru 1334
This theorem is referenced by:  euotd  4176  elabrex  5659  riota5f  5754  bj-nn0suc0  13207
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