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Math blogging: 0.999...

This recently featured article on Wikipedia brought back fond memories of impassioned, beer-fueled math arguments in college (yes, I'm a geek.) It's about the number 0.9999999... a quantity with an infinite string of 9's following the decimal (this quantity is...

Posted in Cynical Nation on October 25, 2006 08:32 AM

New blogger here at CN

Well this doesn't happen too often, but I'm pleased to announce that Cynical Nation has a new author -- Adam Gurri of Sophistpundit. He's been a regular commenter here for some time, and so will probably be familiar to most...

Posted in Cynical Nation on April 9, 2006 09:47 AM

Banach-Tarski: weird triangles

Okay, this has nothing to do with Banach-Tarski mathematically, but it is disturbing and unsettling for exactly the same reasons. Alert reader Brian sent me this image of cut-up and reassembled triangles. See if you can figure out what's going...

Posted in Cynical Nation on March 27, 2006 07:33 PM

Banach-Tarski: More paradoxes of the infinite

In the latest installment of my math-blogging series (see previous posts here and here), I'm continuing to explore paradoxes of the infinite, working toward the goal of understanding the Banach-Tarski paradox. This is one I came up with myself when...

Posted in Cynical Nation on March 20, 2006 01:03 PM

Banach-Tarski: Paradoxes of the infinite

A few days ago I began a series of posts regarding the Banach-Tarski paradox. The implications of this paradox, that it's possible to decompose a sphere into a finite number of pieces and reassemble them to form two solid spheres...

Posted in Cynical Nation on March 8, 2006 06:16 PM

Math blogging: Banach-Tarski

Is it possible to slice a golf ball into pieces and reassemble the pieces to form the Statue of Liberty? Not a golf-ball-sized reproduction of the Statue of Liberty, mind you, but a life-sized one, solid and with no holes...

Posted in Cynical Nation on March 7, 2006 09:14 AM