I've decided to put my lecture scribbles, I mean notes, on the web. This is what I type in during the few hours before each lecture, to remind me the things to talk about. It doesn't necessarily reflect what we actually do in lecture. (1) For one thing, I almost never get through what I prepare. (2) For another, I try to follow the lead of the class, and so lectures often include a fair amount of unanticipated material. (3) Sometimes, presenting something, I realize there was an error in what I prepared, but I silently fix it during the presentation. I don't go back and fix the notes. (4) Finally, I change my mind as I'm presenting things about how to do things. So I can't really recommend reading these notes for any particular purpose, but it's convenient for me to have things on line!