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Mirrors > Home > MPE Home > Th. List > mp2b | Structured version Visualization version Unicode version |
Description: A double modus ponens inference. (Contributed by Mario Carneiro, 24-Jan-2013.) |
Ref | Expression |
---|---|
mp2b.1 |
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mp2b.2 |
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mp2b.3 |
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Ref | Expression |
---|---|
mp2b |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mp2b.1 |
. . 3
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2 | mp2b.2 |
. . 3
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3 | 1, 2 | ax-mp 5 |
. 2
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4 | mp2b.3 |
. 2
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5 | 3, 4 | ax-mp 5 |
1
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