No Stupid Questions@lemmy.world · 13 hours ago

What does ZFC do that Peano arithmetic can't do?

No Stupid Questions@lemmy.world · 13 hours ago

More precisely, is there a “natural” statement (a statement that isn’t deliberately constructed to be an example) that can be stated in PA, proved in ZFC, but not provable in PA?

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12 hours ago
https://en.m.wikipedia.org/wiki/Goodstein's_theorem

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