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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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