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Mirrors > Home > ILE Home > Th. List > rbaib | Unicode version |
Description: Move conjunction outside of biconditional. (Contributed by Mario Carneiro, 11-Sep-2015.) |
Ref | Expression |
---|---|
baib.1 |
Ref | Expression |
---|---|
rbaib |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | baib.1 | . . 3 | |
2 | ancom 253 | . . 3 | |
3 | 1, 2 | bitri 173 | . 2 |
4 | 3 | baib 828 | 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 4190 opres 4621 cores 4824 fvres 5198 fzsplit2 8914 |
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