John D. Cook johndcook.com

Moessner’s Magic

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Equivalence between commonly used elliptic curves

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Monero’s elliptic curve

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Retrofitting error detection

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A bank note with 21 implicit zeros

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Taylor Series and the Argentine Peso

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Analogs of binomial coefficients

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Annuity and factorial notation

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Base58 versus Base85 encoding

johndcook.com·41w·Hacker News

Hyperinflation changes everything

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Numerical problem with an interest calculation

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Interest compounding with every heartbeat

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Powers of 3 + √2

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Multiples and powers mod 1

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Evaluating and lowering AI hallucination cost

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A Continental Divide for Newton’s Method

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All pieces on a small chessboard

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Experiences with Nvidia

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Legendre polynomials

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The biggest perturbation of satellite orbits

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