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Mirrors > Home > MPE Home > Th. List > 2pos | Structured version Visualization version Unicode version |
Description: The number 2 is positive. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
2pos |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 10039 | . . 3 | |
2 | 0lt1 10550 | . . 3 | |
3 | 1, 1, 2, 2 | addgt0ii 10570 | . 2 |
4 | df-2 11079 | . 2 | |
5 | 3, 4 | breqtrri 4680 | 1 |
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