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