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Theorem baibd 831
Description: Move conjunction outside of biconditional. (Contributed by Mario Carneiro, 11-Sep-2015.)
Hypothesis
Ref Expression
baibd.1
Assertion
Ref Expression
baibd

Proof of Theorem baibd
StepHypRef Expression
1 baibd.1 . 2
2 ibar 285 . . 3
32bicomd 129 . 2
41, 3sylan9bb 435 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:  eluz  8262  elicc4  8579
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