This page is a index to math related articles on XahLee.org. There are over a thousand articles. Use the search box to find what you are looking for. The items are listed roughly in order of the project's quality. More substantial ones are on top.
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The derivation of all discontinuous groups of rotation and translation in the plane.

Tutorial on visualization programing using Mathematica graphics, Java applets, POV-Ray.
A annotated listing of 100+ excellent recreational math programs. You'll find polyhedra & Rubic cubes, curves & surfaces, fractals & L-systems, tilings & symmetry, game of hex & game of life, go & five-in-a-row, peg solitare & polyominos, …
A collection and review of some 50 excellent math software.

A exposition of complex mappings from a geometric point of view. (WORK IN PROGRESS).
