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Mirrors > Home > MPE Home > Th. List > sstrd | Structured version Visualization version Unicode version |
Description: Subclass transitivity deduction. (Contributed by NM, 2-Jun-2004.) |
Ref | Expression |
---|---|
sstrd.1 | |
sstrd.2 |
Ref | Expression |
---|---|
sstrd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sstrd.1 | . 2 | |
2 | sstrd.2 | . 2 | |
3 | sstr 3611 | . 2 | |
4 | 1, 2, 3 | syl2anc 693 | 1 |
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