Here we go again... I had a riding accident on Sunday and have pinched a nerve in my spine (and possibly ruptured a disc). Even on Percodan, I am in a lot of pain and can’t walk. So, I have reluctantly come to the conclusion that I will have to cancel today’s (Tues March 18^th) lecture. Sorry about the late notice, but I really tried to make it. I am starting to wonder if this course is jinxed for me. I intend to be back for Thursday’s lecture – if I can’t, I will post a notice on the web site. I will post today’s lecture slides later this morning, if I can – it’s difficult to sit at the computer .

Once again, I am really sorry to have to do this......