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Mirrors > Home > ILE Home > Th. List > nnnn0d | Unicode version |
Description: A positive integer is a nonnegative integer. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
nnnn0d.1 |
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Ref | Expression |
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nnnn0d |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnssnn0 9192 |
. 2
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2 | nnnn0d.1 |
. 2
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3 | 1, 2 | sselid 3165 |
1
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