<Deleted> Catalogue of Algebraic Systems  <Deleted>

The original Catalogue of Algebraic Systems was written by John Pedersen. John moved and I inherited it. The catalogue was quite incomplete.  It had a few mistakes in it and keeping it up was too much trouble. Meanwhile much more material on algebraic systems has appeared on the web.  Below you will find some links where you might find what you are looking for. Good luck! —W. Edwin Clark

I particularly recommend the following sites:

Wikipeida,    MathWorld,   and   PlanetMath.

Most of the links below were placed there sometime ago so don’t be surprised if they no longer exist.