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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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