I was just grading homework 8 and discovered that only _two_ people
handed it in. It's a really interesting homework assignment -- both
people who did it explicitly said so in their solutions. You might
want to do homework 8 too very soon:
http://wstein.org/edu/2010/581d/hw/8.pdf
-- William
--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org