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Theorem trujust 1244
Description: Soundness justification theorem for df-tru 1245. (Contributed by Mario Carneiro, 17-Nov-2013.) (Revised by NM, 11-Jul-2019.)
Assertion
Ref Expression
trujust

Proof of Theorem trujust
StepHypRef Expression
1 id 19 . 2
2 id 19 . 2
31, 22th 163 1
Colors of variables: wff set class
Syntax hints:   wi 4   wb 98  wal 1240   wceq 1242
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia2 100  ax-ia3 101
This theorem depends on definitions:  df-bi 110
This theorem is referenced by: (None)
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