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Theorem ax11b 1593
Description: A bidirectional version of ax-11o 1590. (Contributed by NM, 30-Jun-2006.)
Assertion
Ref Expression
ax11b

Proof of Theorem ax11b
StepHypRef Expression
1 ax-11o 1590 . . 3
21imp 113 . 2
3 ax-4 1333 . . . 4
43com12 25 . . 3
54adantl 260 . 2
62, 5impbid 118 1
Colors of variables: wff set class
Syntax hints:   wn 3   wi 4   wa 95   wb 96  wal 1266
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 97  ax-ia2 98  ax-ia3 99  ax-4 1333  ax-11o 1590
This theorem depends on definitions:  df-bi 108
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