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Mirrors > Home > MPE Home > Th. List > eleq2 | Structured version Visualization version Unicode version |
Description: Equality implies equivalence of membership. (Contributed by NM, 26-May-1993.) (Proof shortened by Wolf Lammen, 20-Nov-2019.) |
Ref | Expression |
---|---|
eleq2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id 22 | . 2 | |
2 | 1 | eleq2d 2687 | 1 |
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