The European Libraries and Electronic Resources (EULER) Project in Mathematical Sciences provides the EulerService site for searching out "mathematical resources such as books, pre-prints, web-pages, abstracts, proceedings, serials, technical reports and thesis." Using a search interface that taps university databases like MathDoc (for preprints) and NetLab (for Internet resources), this...

It's hard to believe it's all free! This trove of information from thefreedictionary.com offers all sorts of information on math. From algebra and integers to derivatives and polynomials, it's all here. By scrolling over or clicking on a link, the visitor is treated to a sometimes whopping amount of information about the given topic. For those simply interested in math, math lovers, or possibly a...

Mizar is a system used to represent mathematical vernacular so that it can be read and manipulated by humans and verified by computers. The Mizar Project began in 1973 and continues at the University of Bialystok in Poland. The computer formalization of mathematics is a daunting task; currently, the project has created a database with over 2,000 definitions of mathematical concepts and more than...

Wolfram Research, the maker of the popular software Mathematica, recently added a comprehensive database of mathematical functions to its Web site. Currently, there are over 37,000 formulas that can be browsed alphabetically or divided into fourteen categories. Documents explaining general identities and notations used on the site are also available; however, users must sign the guestbook before...

Zentralblatt MATH is an extensive database containing abstracts of reviewed articles in pure and applied mathematics. The database contains over two million entries drawn from more than 2,300 serials and journals. The publication dates for the articles begin in 1868 and continue into the present. The search function is flexible, allowing visitors to search the database by numerous criteria such as...