NuMathWiki

NuMathWiki is a free and public wiki for mathematicians. Its key features are:

• Anyone is free to create and edit pages about mathematics topics.
• Registered users get their own namespaces of private pages only they can edit and (by default) view. A permissions system allows you to control who can view and/or edit your pages, so you can easily set up pages for collaborations, work/study groups, etc.
• The wiki supports MathJax for easy LaTeX-style typesetting of math formulas, as well as dynamic features such as collapsible sections, ability to include graphics and multimedia files, and more.

Click below to enter the wiki and start exploring.