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Mirrors > Home > QLE Home > Th. List > or0 | Unicode version |
Description: Disjunction with 0. |
Ref | Expression |
---|---|
or0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dff2 100 | . . . 4 | |
2 | ax-a2 31 | . . . . 5 | |
3 | 2 | ax-r4 37 | . . . 4 |
4 | 1, 3 | ax-r2 36 | . . 3 |
5 | 4 | lor 70 | . 2 |
6 | ax-a5 34 | . 2 | |
7 | 5, 6 | ax-r2 36 | 1 |
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