But there is also http://mathoverflow.net/ http://mathoverflow.net/ Here's a meta question asking about the differences between the two sites: http://meta.mat

But there is also http://mathoverflow.net/ http://mathoverflow.net/ Here's a meta question asking about the differences between the two sites: http://meta.math.stackexchange.com/questions/41/differences-between-mathoverflow-and-math-stackexchange http://meta.math.stackexchange.com/questions/41/differences-...