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Theorem a1tru 1259
Description: Anything implies . (Contributed by FL, 20-Mar-2011.) (Proof shortened by Anthony Hart, 1-Aug-2011.)
Assertion
Ref Expression
a1tru (𝜑 → ⊤)

Proof of Theorem a1tru
StepHypRef Expression
1 tru 1247 . 2
21a1i 9 1 (𝜑 → ⊤)
Colors of variables: wff set class
Syntax hints:  wi 4  wtru 1244
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101
This theorem depends on definitions:  df-bi 110  df-tru 1246
This theorem is referenced by:  truanOLD  1261  euotd  3991  elabrex  5397  riota5f  5492  bj-nn0suc0  10048
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