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Mirrors > Home > MPE Home > Th. List > peano2nn0 | Structured version Visualization version Unicode version |
Description: Second Peano postulate for nonnegative integers. (Contributed by NM, 9-May-2004.) |
Ref | Expression |
---|---|
peano2nn0 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1nn0 11308 |
. 2
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2 | nn0addcl 11328 |
. 2
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3 | 1, 2 | mpan2 707 |
1
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