NFE Home New Foundations Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  NFE Home  >  Th. List  >  rbaib Unicode version

Theorem rbaib 873
Description: Move conjunction outside of biconditional. (Contributed by Mario Carneiro, 11-Sep-2015.)
Hypothesis
Ref Expression
baib.1
Assertion
Ref Expression
rbaib

Proof of Theorem rbaib
StepHypRef Expression
1 baib.1 . . 3
2 ancom 437 . . 3
31, 2bitri 240 . 2
43baib 871 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wb 176   wa 358
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
This theorem is referenced by:  cador  1391
  Copyright terms: Public domain W3C validator