3 posts tagged with Mathematics by DU.
Displaying 1 through 3 of 3.


Happy half-τ day! What's a half-τ? You know it as π, but π is wrong. (via)
posted by DU on Mar 14, 2011 - 100 comments

Gimme That Old Time Derivation

The Cornell Historical Math Monographs archive has a great many famous papers, including works by De Morgan, Hamilton, Descartes (warning: French) and of course Lewis Carroll. [more inside]
posted by DU on Jun 15, 2009 - 7 comments


What if Euclid had been Japanese? There are traditionally stated and proved theorems about origami. And MetaFilter has previously explored modular origami (as well as the boring old artistic kind), which has a geometric foundation. However, origami itself is a powerful mathematical framework that allows one to, for instance, solve the famously insoluable problem of trisecting an angle. More generally: Traditional geometry solves quadratic equations, origami solves cubic ones. (Many more mathematical items about and using origami can be found in the excellent mathematics teachers' book: Project Origami: Activities for Exploring Mathematics, most of which are unfortunately not findable online).
posted by DU on Feb 13, 2007 - 9 comments

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