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Theorem altru 1789
Description: For all sets, is true. (Contributed by Anthony Hart, 13-Sep-2011.)
Ref Expression
altru 𝑥

Proof of Theorem altru
StepHypRef Expression
1 tru 1526 . 2
21ax-gen 1777 1 𝑥
Colors of variables: wff setvar class
Syntax hints:  wal 1520  wtru 1523
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1777
This theorem depends on definitions:  df-bi 208  df-tru 1525
This theorem is referenced by: (None)
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