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Theorem nanbi12d 1303
Description: Join two logical equivalences with anti-conjunction. (Contributed by Scott Fenton, 2-Jan-2018.)
Hypotheses
Ref Expression
nanbid.1
nanbi12d.2
Assertion
Ref Expression
nanbi12d

Proof of Theorem nanbi12d
StepHypRef Expression
1 nanbid.1 . 2
2 nanbi12d.2 . 2
3 nanbi12 1297 . 2
41, 2, 3syl2anc 642 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wb 176   wnan 1287
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 177  df-an 360  df-nan 1288
This theorem is referenced by:  ninjust  3210  elning  3217  elun  3220
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