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Mirrors > Home > MPE Home > Th. List > 3anbi2d | Structured version Visualization version Unicode version |
Description: Deduction adding conjuncts to an equivalence. (Contributed by NM, 8-Sep-2006.) |
Ref | Expression |
---|---|
3anbi1d.1 |
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Ref | Expression |
---|---|
3anbi2d |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | biidd 245 |
. 2
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2 | 3anbi1d.1 |
. 2
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3 | 1, 2 | 3anbi12d 1349 |
1
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