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Mirrors > Home > QLE Home > Th. List > dff | Unicode version |
Description: Alternate defintion of "false". |
Ref | Expression |
---|---|
dff |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dff2 100 | . 2 | |
2 | ancom 74 | . . . 4 | |
3 | anor2 89 | . . . 4 | |
4 | 2, 3 | ax-r2 36 | . . 3 |
5 | 4 | ax-r1 35 | . 2 |
6 | 1, 5 | ax-r2 36 | 1 |
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