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Mirrors > Home > NFE Home > Th. List > 3jaodan | Unicode version |
Description: Disjunction of 3 antecedents (deduction). (Contributed by NM, 14-Oct-2005.) |
Ref | Expression |
---|---|
3jaodan.1 |
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3jaodan.2 |
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3jaodan.3 |
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Ref | Expression |
---|---|
3jaodan |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3jaodan.1 |
. . . 4
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2 | 1 | ex 423 |
. . 3
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3 | 3jaodan.2 |
. . . 4
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4 | 3 | ex 423 |
. . 3
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5 | 3jaodan.3 |
. . . 4
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6 | 5 | ex 423 |
. . 3
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7 | 2, 4, 6 | 3jaod 1246 |
. 2
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8 | 7 | imp 418 |
1
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Colors of variables: wff setvar class |
Syntax hints: ![]() ![]() ![]() |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 177 df-or 359 df-an 360 df-3or 935 df-3an 936 |
This theorem is referenced by: (None) |
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