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Mirrors > Home > MPE Home > Th. List > nngt0 | Structured version Visualization version Unicode version |
Description: A positive integer is positive. (Contributed by NM, 26-Sep-1999.) |
Ref | Expression |
---|---|
nngt0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnre 11027 | . 2 | |
2 | nnge1 11046 | . 2 | |
3 | 0lt1 10550 | . . 3 | |
4 | 0re 10040 | . . . 4 | |
5 | 1re 10039 | . . . 4 | |
6 | ltletr 10129 | . . . 4 | |
7 | 4, 5, 6 | mp3an12 1414 | . . 3 |
8 | 3, 7 | mpani 712 | . 2 |
9 | 1, 2, 8 | sylc 65 | 1 |
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