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John D. Cook
johndcook.com
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Hadamard Codes and Sphere Packing
John D. Cook
5w
5 weeks ago
2 min read
John D. Cook
John
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How NASA’s Mariner 9 probe encoded images
John D. Cook
5w
5 weeks ago
HN
1 min read
John D. Cook
John
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Constructing Hadamard matrices
John D. Cook
5w
5 weeks ago
HN
2 min read
John D. Cook
John
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Cryptic but consistent
John D. Cook
5w
5 weeks ago
HN
1 min read
John D. Cook
Covers 1 story
A shell exclamation mark is not for yelling. Be lazy
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Dogs and Fat Tails
John D. Cook
5w
5 weeks ago
HN
John D. Cook
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Manually Unbreakable Cryptography
John D. Cook
5w
5 weeks ago
HN
2 min read
John D. Cook
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Learning from historical mistakes
John D. Cook
5w
5 weeks ago
HN
2
John D. Cook
HN
2
newer thread
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older thread
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Inverse differential equations
John D. Cook
5w
5 weeks ago
HN
1 min read
John D. Cook
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DNA and Bessel functions
John D. Cook
5w
5 weeks ago
HN
John D. Cook
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A simple range reduction method
John D. Cook
5w
5 weeks ago
2 min read
John D. Cook
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Corrupted apostrophes
John D. Cook
6w
6 weeks ago
HN
John D. Cook
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How not to calculate cosine
John D. Cook
6w
6 weeks ago
2 min read
John D. Cook
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cos(200!)
John D. Cook
6w
6 weeks ago
1 min read
John D. Cook
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Calculating log(1000!)
John D. Cook
6w
6 weeks ago
2 min read
John D. Cook
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The code that didn’t break
John D. Cook
6w
6 weeks ago
John D. Cook
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Enumerating trees and circles
John D. Cook
6w
6 weeks ago
1 min read
John D. Cook
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Metallic alchemy
John D. Cook
6w
6 weeks ago
1 min read
John D. Cook
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Ratio of metallic ratios
John D. Cook
6w
6 weeks ago
1 min read
John D. Cook
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Holonomic functions
John D. Cook
6w
6 weeks ago
John D. Cook
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Estimating a cumulative sum
John D. Cook
6w
6 weeks ago
1 min read
John D. Cook
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