John Cook
Publishes 1 feed
John D. Cook Consulting Substack
Highlights from blog posts
10 posts · theirs
Lately
Mean distance to the sun and a new graph theorem
Compressing Matrices and Correcting Codes
Applications of Hadamard Matrices
Dogs, Shells, Retro Crypto, etc.
DNA, Range Reduction, and Apostrophes
Math with big numbers
Mathematical Alchemy
Physics, Special Functions, and Asymptotics
Counting Trees and Solving Equations
Hiding cryptographic keys in decks of cards
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