it's tagged math

Fourier Transform in JavaScript

This page demonstrates the use of JavaScript to perform Fourier Transforms, and DHTML to produce graphs of functions

http://home.fuse.net/clymer/graphs/fourier.html

Animated sine wave in Javascript HTML5 « quantblog

I had a look around but most of the math animations are Java applets which I find a bit top heavy, and this should be doable in Javascript.

http://quantblog.wordpress.com/2010/05/26/anim...

Applied topology and Dante: an interview with Robert Ghrist

Topology has countless applications to other areas of mathematics, but I’d not heard of much work directly applying topology to practical physical problems.

http://www.johndcook.com/blog/2010/09/13/appli...

SpikeySpheres

I've come to realise that I can consider it as wandering around on a smooth landscape in 1800 dimensions

http://www.penzba.co.uk/cgi-bin/PvsNP.py?Spike...

The R Project for Statistical Computing

R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R.

http://www.r-project.org/

Mandelbulb: The Unravelling of the Real 3D Mandelbrot Fractal

It's found by following a relatively simple math formula. But in the end, it's still only 2D and flat - there's no depth, shadows, perspective, or light sourcing. What we have featured in this article is a potential 3D version of the same fractal. For the impatient, you can skip to the nice pics, but the below makes an interesting read (with a little math as well for the curious).

http://www.skytopia.com/project/fractal/mandel...

Known Amicable Pairs

This is an attempt to collect all known amicable pairs.

http://amicable.homepage.dk/knwnc2.htm

Fano plane - Wikipedia, the free encyclopedia

Perhaps the best way to view the plane is via linear algebra. Using the standard construction via homogeneous coordinates, we can identify the points with the non-zero ordered triples of binary digits, excluding 000. This can be done in such a way that for every two points we can find the third point on the line through the two by adding modulo 2 in each position. In other words, the points of the Fano plane correspond to the non-zero points of the finite vector space F23 of dimension 3 over F2 , the finite field of order 2. A line in the Fano plane corresponds to a 2-dimensional subspace of F23: the points a, b, c are collinear if and only if a + b = c (equivalently, b + c = a, or c + a = b).

http://en.wikipedia.org/wiki/Fano_plane

Nontransitive dice - Wikipedia, the free encyclopedia

A set of nontransitive dice is a set of dice for which the relation "is more likely to roll a higher number" is not transitive. See also intransitivity.

http://en.wikipedia.org/wiki/Nontransitive_dice

Bertrand's Paradox from Interactive Mathematics Miscellany and Puzzles

Given a circle. Find the probability that a chord chosen at random be longer than the side of an inscribed equilateral triangle.

http://www.cut-the-knot.org/bertrand.shtml

What's special about this number?

The word 'four' has 4 letters and is the smallest honest number. Honest numbers are numbers n that can be described using exactly n letters in standard mathematical English.

http://www.archimedes-lab.org/numbers/Num1_69....