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Mirrors > Home > MPE Home > Th. List > 3bitrd | Structured version Visualization version Unicode version |
Description: Deduction from transitivity of biconditional. (Contributed by NM, 13-Aug-1999.) |
Ref | Expression |
---|---|
3bitrd.1 |
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3bitrd.2 |
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3bitrd.3 |
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Ref | Expression |
---|---|
3bitrd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3bitrd.1 |
. . 3
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2 | 3bitrd.2 |
. . 3
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3 | 1, 2 | bitrd 257 |
. 2
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4 | 3bitrd.3 |
. 2
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5 | 3, 4 | bitrd 257 |
1
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