No, really, pi is wrong: The Tau Manifesto by Michael Hartl. Function calculator. Phi, 1.618, the Golden Ratio and Fibonacci series and its applications. 8 math talks to blow your mind. Mathematics gets down to work in these talks, breathing life and logic into everyday problems.
Prepare for math puzzlers both solved and unsolvable, and even some still waiting for solutions. Ron Eglash: The fractals at the heart of African designs When Ron Eglash first saw an aerial photo of an African village, he couldn’t rest until he knew — were the fractals in the layout of the village a coincidence, or were the forces of mathematics and culture colliding in unexpected ways? Here, he tells of his travels around the continent in search of an answer. How big is infinity? Why 5, 8 and 24 Are the Strangest Numbers in the Universe. Wolfram Research: Mathematica, Technical and Scientific Software. Wolfram MathWorld: The Web's Most Extensive Mathematics Resource.