Recently retired from Cambridge Philosophy Faculty, interested in logic and philosophy of maths.
I waste time on twitter @PeterSmith (http://twitter.com/PeterSmith/)
For more about me, see http://www.logicmatters.net/about/
Q&A for people studying math at any level and professionals in related fields
Q&A for those interested in logical reasoning
Q&A for professional mathematicians
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems