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[1XR] Let \(Nβ β\), and let \(P(n)\) a be logical clause, true for \(n=N\) and such that
\[ β nβ₯ N, P(n)β P(S(n))\quad , \]
then \(P\) is true for every \(nβ₯ N\).
[1XR] Let \(Nβ β\), and let \(P(n)\) a be logical clause, true for \(n=N\) and such that
then \(P\) is true for every \(nβ₯ N\).