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