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John D. Cook
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Primecoin primality test
John D. Cook
36w
36 weeks ago
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Bi-twin prime chains
John D. Cook
36w
36 weeks ago
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Primecoin and Cunningham prime chains
John D. Cook
36w
36 weeks ago
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Golomb-Rice coding for compressing a set of hashes
John D. Cook
36w
36 weeks ago
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Logic behind chemical element symbols
John D. Cook
36w
36 weeks ago
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Largest known compositorial prime
John D. Cook
36w
36 weeks ago
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log2(3) and log2(5)
John D. Cook
36w
36 weeks ago
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John D. Cook
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In-shuffles and out-shuffles
John D. Cook
37w
37 weeks ago
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Perfect and imperfect shuffles
John D. Cook
37w
37 weeks ago
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Knight’s tour with fewest obtuse angles
John D. Cook
37w
37 weeks ago
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Converting between geographic and geocentric latitude
John D. Cook
37w
37 weeks ago
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Klein bottle: from intuition to rigor
John D. Cook
38w
38 weeks ago
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Validating AI output with consistency checks & formal proofs
John D. Cook
38w
38 weeks ago
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John D. Cook
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When was Newton born?
John D. Cook
38w
38 weeks ago
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John D. Cook
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Mason, Dixon, and Latitude
John D. Cook
38w
38 weeks ago
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Bowie's ODE solver and the nonlinear pendulum
John D. Cook
38w
38 weeks ago
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Trying to fit exponential data
John D. Cook
38w
38 weeks ago
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The folly of naively fitting a logistic curve
John D. Cook
39w
39 weeks ago
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John D. Cook
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Regular expressions that cross lines
John D. Cook
39w
39 weeks ago
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Here’s a curious theorem I stumbled across recently \[1\]\. Take an integer *N* which is not a multiple of 10\. Then there is some multiple of *N* which only contains the digits...
John D. Cook
39w
39 weeks ago
John D. Cook
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Actions for Here’s a curious theorem I stumbled across recently \[1\]\. Take an integer *N* which is not a multiple of 10\. Then there is some multiple of *N* which only contains the digits...
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