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Mirrors > Home > MPE Home > Th. List > sseld | Structured version Visualization version Unicode version |
Description: Membership deduction from subclass relationship. (Contributed by NM, 15-Nov-1995.) |
Ref | Expression |
---|---|
sseld.1 |
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Ref | Expression |
---|---|
sseld |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sseld.1 |
. 2
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2 | ssel 3412 |
. 2
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3 | 1, 2 | syl 17 |
1
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