General mathematical subjects

• Mathematical Departments at Ghent University
• History of mathematics: GREECE
• Greek Mathematics Index
• Euclid's Elements
• Introduction to the works of Euclid
• The Golden Section
• A catalogue of the uniform polyhedra
• George W. Hart's extensive site about polyhedra

Raytracing

• POVRAY: an excellent freeware copyrighted raytracer
• Descriptions and samples for POVRAY by Friedrich Lohmueller