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Mirrors > Home > MPE Home > Th. List > ssel | Structured version Visualization version Unicode version |
Description: Membership relationships follow from a subclass relationship. (Contributed by NM, 5-Aug-1993.) |
Ref | Expression |
---|---|
ssel |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfss2 3591 | . . . . . 6 | |
2 | 1 | biimpi 206 | . . . . 5 |
3 | 2 | 19.21bi 2059 | . . . 4 |
4 | 3 | anim2d 589 | . . 3 |
5 | 4 | eximdv 1846 | . 2 |
6 | df-clel 2618 | . 2 | |
7 | df-clel 2618 | . 2 | |
8 | 5, 6, 7 | 3imtr4g 285 | 1 |
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