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monthly writings in and around mathematics by James Propp

Solving the Flat Cube

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What Bad Bases Are Good For

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Seventeen Camels and Where They Can Take You

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Sorry, Mary

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In Praise of Stupid Questions

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Is Matrix Multiplication Ugly?

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Picturing Mathematics

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Randomness Made to Order, part 1

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When .999… Isn’t 1

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Remembering Kelly

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Math and the Museum

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Is 1 Prime, and Does It Matter?

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How Pi Almost Wasn't

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Dedekind's Subtle Knife

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The Real Line versus the Fakes

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When 1+1+1 Equals 1

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Can Math Save Your Soul?

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Industrious Dice

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Our Fractional Universe

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Math for English Majors and Everybody Else

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