I present several PRNGs that should have much better statistical properties than the built-in Math.random. They have been taken from, or inspired by, well-known sources on the subject, and they have been extensively tested. They share a common interface, but the actual algorithms differ, so that one can choose the best for one's platform and needs.

Calculus Revisited is a series of videos and related resources that covers the materials normally found in a freshman-level introductory calculus course.  The series was first released in 1970 as a way for people to review the essentials of calculus.  It is equally valuable for students who are learning calculus for the first time.

I've written some lecture notes for the Math 485 course Mathematics of the Rubik's cube. The latest "latex" version is nicer (better looking stylistically and has more material) and is now available on the web. For that, go to my books page. The book these notes eventually became has been published by Johns Hopkins University Press: Adventures in group theory. (All royalties go directly to charity - EII.)

It's been almost two years since we last wrote about the potential for a real 3D equivalent to the famous 2D Mandelbrot set. We're talking about a fractal which produces exquisite detail on all axes and zoom levels; one that doesn't simply produce the 'extruded' look of the various height-mapped images, or the 'whipped cream' swirls of the Quaternion approach.

A suitably simple example to make Bayes' theorem clear is the
following:

Different types of mazes and how to generate and solve them

Tips and notes for typing basic and advanced math in LaTeX

A University of New South Wales academic, Dr Norman Wildberger, has rewritten the arcane rules of trigonometry and eliminated sines, cosines and tangents from the trigonometric toolkit.

This PI search engine is optimized for searching for seven digit strings (phone numbers) within PI.