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| Mirrors > Home > MPE Home > Th. List > anbi1d | Structured version Visualization version Unicode version | ||
| Description: Deduction adding a right conjunct to both sides of a logical equivalence. (Contributed by NM, 11-May-1993.) (Proof shortened by Wolf Lammen, 16-Nov-2013.) |
| Ref | Expression |
|---|---|
| bid.1 |
|
| Ref | Expression |
|---|---|
| anbi1d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bid.1 |
. . 3
| |
| 2 | 1 | a1d 25 |
. 2
|
| 3 | 2 | pm5.32rd 672 |
1
|
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