John D. Cook johndcook.com

C 128-bit unsigned int literals and printing

johndcook.com·6h·Hacker News

Hacking the lehmer64 RNG

johndcook.com·8h·Hacker News

Euler function in the context of q-series and partitions

johndcook.com·18h·Hacker News

Left and right shifts are pseudoinverses

johndcook.com·1d·Hacker News

Probability that a random binary matrix is invertible

johndcook.com·1d

The linear algebra of bit twiddling

johndcook.com·2d

Reverse engineering Mersenne Twister with Linear Algebra

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Calculating curvature

johndcook.com·4d·Hacker News

Smoothed polygons

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Triangular analog of the squircle

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Unified config files

johndcook.com·6d·Hacker News

The mythology of category theory

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Changing one character in a PDF

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The shape of a guitar pick

johndcook.com·1w·Hacker News

Approximating even functions by powers of cosine

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Three kinds of derivative applied to the ReLU (ramp) function

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Turning a trick into a technique

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Circular arc approximation

johndcook.com·2w·Hacker News

Closed-form solution nonlinear pendulum w/ Jacobi functions

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nth derivative of a quotient

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