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| Mirrors > Home > MPE Home > Th. List > eqidd | Structured version Visualization version Unicode version | ||
| Description: Class identity law with antecedent. (Contributed by NM, 21-Aug-2008.) |
| Ref | Expression |
|---|---|
| eqidd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2622 |
. 2
| |
| 2 | 1 | a1i 11 |
1
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