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Mirrors > Home > MPE Home > Th. List > nnuz | Structured version Visualization version Unicode version |
Description: Positive integers expressed as an upper set of integers. (Contributed by NM, 2-Sep-2005.) |
Ref | Expression |
---|---|
nnuz |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnzrab 11405 | . 2 | |
2 | 1z 11407 | . . 3 | |
3 | uzval 11689 | . . 3 | |
4 | 2, 3 | ax-mp 5 | . 2 |
5 | 1, 4 | eqtr4i 2647 | 1 |
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