I thought this board would be the best place to post this, mods feel free to move it, but I'll be using it for C++ so whatever...
Anyway, I was looking at a book containing lots of algorithm info at my local college and I was wondering what the thing that measures the speed means. In this book it was represted by a sigma with n on the top or something? Does anyone know what I'm talking about? Any help, or a link to website about it would be much appreciated.