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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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