The Encyclopedia of Mathematics wiki is an open access resource designed specifically for the mathematics community. The original articles are from the online Enyclopedia of Mathematics, published by Kluwer Academic Publishers in 2002. With more than 8.000 entries, illuminating nearly 50.000 notions in mathematics, the Encyclopedia of Mathematics was the most up-to-date graduate-level reference work in the field of mathematics.

Springer, in cooperation with the European mathematical society, has made the content of this Encyclopedia freely open to the public. The original articles go back to the Soviet Matematicheskaya entsiklopedya (1977), originally edited by Ivan Matveevich Vinogradov. The electronic version had its formulae written in TEX, but its code was lost: most of the current pages have the formulas saved as png images.

Though starting from a wealth of material, written by professional mathematicians there is a lot to do! From the routine task of retyping old pages in Tex to the one of updating the contents and correcting mistakes; from adding to the pages nice new media (pictures and videos) to creating completely new entries encompassing the last exciting developments of math. Whether you are an undergraduate student, a graduate student or a professional mathematician you are welcome to join us in this project. Unlike other wikis, there is an editorial board monitoring the various pages, but just like other wikis anybody who makes a user account is free to discuss and modify things. It is also very easy to use: if you know Tex you will be able to write new pages in a few minutes. At this web page you will find my contributions to the Encyclopedia.

But of course, even if you do not want to become a contributor, just give it sometimes a try if you are looking for quick explanations, definitions, history or references: I am confident you will find out it is a great tool to learn math.