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Mirrors > Home > MPE Home > Th. List > elfznn | Structured version Visualization version Unicode version |
Description: A member of a finite set of sequential integers starting at 1 is a positive integer. (Contributed by NM, 24-Aug-2005.) |
Ref | Expression |
---|---|
elfznn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzelz 12342 | . 2 | |
2 | elfzle1 12344 | . 2 | |
3 | elnnz1 11403 | . 2 | |
4 | 1, 2, 3 | sylanbrc 698 | 1 |
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