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| Mirrors > Home > MPE Home > Th. List > ssel2 | Structured version Visualization version Unicode version | ||
| Description: Membership relationships follow from a subclass relationship. (Contributed by NM, 7-Jun-2004.) |
| Ref | Expression |
|---|---|
| ssel2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 3597 |
. 2
| |
| 2 | 1 | imp 445 |
1
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