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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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