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Mirrors > Home > ILE Home > Th. List > ssrdv | Unicode version |
Description: Deduction based on subclass definition. (Contributed by NM, 15-Nov-1995.) |
Ref | Expression |
---|---|
ssrdv.1 |
Ref | Expression |
---|---|
ssrdv |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssrdv.1 | . . 3 | |
2 | 1 | alrimiv 1862 | . 2 |
3 | dfss2 3131 | . 2 | |
4 | 2, 3 | sylibr 133 | 1 |
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