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Theorem rbaib 829
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 253 . . 3
31, 2bitri 173 . 2
43baib 827 1
Colors of variables: wff set class
Syntax hints:   wi 4   wa 97   wb 98
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101
This theorem depends on definitions:  df-bi 110
This theorem is referenced by:  reusv1  4156  opres  4564  cores  4767  fvres  5141  fzsplit2  8684
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