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Mirrors > Home > MPE Home > Th. List > nn0uz | Structured version Unicode version |
Description: Nonnegative integers expressed as an upper set of integers. (Contributed by NM, 2-Sep-2005.) |
Ref | Expression |
---|---|
nn0uz |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0zrab 10776 |
. 2
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2 | 0z 10758 |
. . 3
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3 | uzval 10964 |
. . 3
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4 | 2, 3 | ax-mp 5 |
. 2
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5 | 1, 4 | eqtr4i 2483 |
1
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