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Mirrors > Home > QLE Home > Th. List > le3tr1 | Unicode version |
Description: Transitive inference useful for introducing definitions. |
Ref | Expression |
---|---|
le3tr1.1 | |
le3tr1.2 | |
le3tr1.3 |
Ref | Expression |
---|---|
le3tr1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | le3tr1.2 | . . 3 | |
2 | le3tr1.1 | . . 3 | |
3 | 1, 2 | bltr 138 | . 2 |
4 | le3tr1.3 | . . 3 | |
5 | 4 | ax-r1 35 | . 2 |
6 | 3, 5 | lbtr 139 | 1 |
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