# Recursive Book Cover Is Recursive

The cover art for Paul Halmos' book on Naive Set Theory plays with the self-referential nature of Russel's Paradox, to humorous visual effect.

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The cover art for Paul Halmos' book on Naive Set Theory plays with the self-referential nature of Russel's Paradox, to humorous visual effect. » 6/29/14 8:30am 6/29/14 8:30am

Our universe appears to be bound by a finite set of laws, yet we often talk about things that go on for an eternity. "Infinity" is a strange idea. But it's crucial if you want to understand anything from philosophy to mathematics. Here’s why. » 7/31/13 10:42am 7/31/13 10:42am

Minute Physics' Henry Reich takes a break from physics to drop some maths knowledge. Using some basic tenets of set theory, Reich explains how we know that one infinity can be bigger than another. » 5/12/12 1:40pm 5/12/12 1:40pm

How's your Monday coming along? Pretty rough? Well it's about to get a little hairier. If I'm not mistaken, this self-referential brain teaser is a play on the age-old Liar's paradox, (or, for those of you familiar with set theory, Russell's paradox), reframed in the form of a multiple-choice question. » 10/31/11 12:30pm 10/31/11 12:30pm

Benoit Mandelbrot, who died last week at 85, was to math what Carl Sagan was to astrophysics. He wasn't just a researcher; he popularized scientific thought. And he's best known for bringing fractal mathematics to the masses. » 10/18/10 6:40am 10/18/10 6:40am

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