John D. Cook johndcook.com

Standing with Intellectual Giants

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Rich Sutton’s bitter lesson of AI

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Multiplication tables and Latin squares

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The Buenos Aires constant

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1 + 2 + 3 + … = −1/12

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Multiple Angle Asymmetry

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Russian Morse Code

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Posthumous Chebyshev Polynomials

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Sparse binary Pythagorean triples

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DeepSeek-R1: Do we need less compute now?

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Matrix representations of number systems

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Euler’s formula for dual numbers and double numbers

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Tricks for radix conversion by hand

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Double rounding

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A magical land where rounding equals truncation

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Duplicating Hankel plot from A&S

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Area of a quadrilateral from the lengths of its sides

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Entering Russian characters in Vim with digraphs

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Chebyshev and Russian transliteration

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