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>> No.15706423 [View]
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15706423

>>15706394
Yeah the consistency of arithmetic was proven. Note this doesn't contradict Godel's second theorem, because it claims that arithmetic can't prove ITS OWN consistency, i.e you can't prove the consistency of arithmetic using arithmetic.
https://en.wikipedia.org/wiki/Gentzen%27s_consistency_proof
https://en.wikipedia.org/wiki/Foundations_of_geometry

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