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| Mirrors > Home > MPE Home > Th. List > sstri | Structured version Visualization version Unicode version | ||
| Description: Subclass transitivity inference. (Contributed by NM, 5-May-2000.) |
| Ref | Expression |
|---|---|
| sstri.1 |
|
| sstri.2 |
|
| Ref | Expression |
|---|---|
| sstri |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sstri.1 |
. 2
| |
| 2 | sstri.2 |
. 2
| |
| 3 | sstr2 3610 |
. 2
| |
| 4 | 1, 2, 3 | mp2 9 |
1
|
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