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Mirrors > Home > MPE Home > Th. List > nnnn0 | Structured version Visualization version Unicode version |
Description: A positive integer is a nonnegative integer. (Contributed by NM, 9-May-2004.) |
Ref | Expression |
---|---|
nnnn0 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnssnn0 11295 | . 2 | |
2 | 1 | sseli 3599 | 1 |
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