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Theorem ax11b 1704
Description: A bidirectional version of ax-11o 1701. (Contributed by NM, 30-Jun-2006.)
Assertion
Ref Expression
ax11b

Proof of Theorem ax11b
StepHypRef Expression
1 ax11o 1700 . . 3
21imp 115 . 2
3 ax-4 1397 . . . 4
43com12 27 . . 3
54adantl 262 . 2
62, 5impbid 120 1
Colors of variables: wff set class
Syntax hints:   wn 3   wi 4   wa 97   wb 98  wal 1240
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-in2 545  ax-io 629  ax-5 1333  ax-7 1334  ax-gen 1335  ax-ie1 1379  ax-ie2 1380  ax-8 1392  ax-10 1393  ax-11 1394  ax-i12 1395  ax-4 1397  ax-17 1416  ax-i9 1420  ax-ial 1424
This theorem depends on definitions:  df-bi 110  df-nf 1347  df-sb 1643
This theorem is referenced by: (None)
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