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Theorem nanbi12 1297
Description: Join two logical equivalences with anti-conjunction. (Contributed by SF, 2-Jan-2018.)
Assertion
Ref Expression
nanbi12

Proof of Theorem nanbi12
StepHypRef Expression
1 nanbi1 1295 . 2
2 nanbi2 1296 . 2
31, 2sylan9bb 680 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wb 176   wa 358   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:  nanbi12i  1300  nanbi12d  1303
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