John D. Cook johndcook.com

Orbital hodograph | Plotting velocity of Keplerian orbit

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Race between primes of the forms 4k + 1 and 4k + 3

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Wagon’s algorithm in Python

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Finding a square root of -1 mod p

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Finding a non-square mod p

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Expressing a prime as the sum of two squares

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Aligning one matrix with another

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Computing large Fibonacci numbers

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Fibonacci numbers and time-space tradeoffs

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Chowla conjecture on the minimum of a cosine series

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Finding all the roots of a polynomial using the QR algorithm

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Fibonacci number certificates

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Gamma function at reciprocals of integers

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Polish serenity

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Satellites have a lot of room

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AGI, ASI, A*I – Do we have all we need to get there?

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Bridging secrets is hard

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Fortunes and Geometric Means

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Zero knowledge proof of a product

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How to prove you know a discrete logarithm

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