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| Mirrors > Home > MPE Home > Th. List > ralbii | Structured version Visualization version Unicode version | ||
| Description: Inference adding restricted universal quantifier to both sides of an equivalence. (Contributed by NM, 23-Nov-1994.) (Revised by Mario Carneiro, 17-Oct-2016.) (Proof shortened by Wolf Lammen, 4-Dec-2019.) |
| Ref | Expression |
|---|---|
| ralbii.1 |
|
| Ref | Expression |
|---|---|
| ralbii |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ralbii.1 |
. . 3
| |
| 2 | 1 | imbi2i 326 |
. 2
|
| 3 | 2 | ralbii2 2978 |
1
|
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