Java program to factor large numbers. In addition to ECM, it detects algebraic factors for Cunningham numbers and can use the Self Initialising Quadratic Sieve algorithm.
Home page of the mathematician Herbert Wilf, which offers some of his books for download. I have already read the very interesting "Mathematics for the Physical Sciences".
Periodic table of elements, as large PNG image. There is copyright on the design, although I cannot see what is so special about it. Let's be thankful that Mendeleev was more generous.
Trac is an enhanced wiki and issue tracking system for software development projects. Trac uses a minimalistic approach to web-based software project management. Our mission is to help developers write great software while staying out of the way. Trac sho
An attempt to calibrate the longitude information from Google maps--it appears that the URL which can be obtained from "link to this page" contains ll=,and refers to the left edge of the displayed area.