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Mirrors > Home > ILE Home > Th. List > bitrd | Unicode version |
Description: Deduction form of bitri 184. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen, 14-Apr-2013.) |
Ref | Expression |
---|---|
bitrd.1 |
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bitrd.2 |
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Ref | Expression |
---|---|
bitrd |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bitrd.1 |
. . . 4
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2 | 1 | pm5.74i 180 |
. . 3
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3 | bitrd.2 |
. . . 4
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4 | 3 | pm5.74i 180 |
. . 3
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5 | 2, 4 | bitri 184 |
. 2
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6 | 5 | pm5.74ri 181 |
1
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