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Mirrors > Home > ILE Home > Th. List > nnzd | Unicode version |
Description: A nonnegative integer is an integer. (Contributed by Mario Carneiro, 28-May-2016.) |
Ref | Expression |
---|---|
nnzd.1 |
Ref | Expression |
---|---|
nnzd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnzd.1 | . . 3 | |
2 | 1 | nnnn0d 9188 | . 2 |
3 | 2 | nn0zd 9332 | 1 |
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