All of the problem sets for the term have been posted. Note that the 7th one is longer than usual, so you should budget your time so that you can spend longer on it.
4th year students: To ensure that your first problem set is marked in time for the first class section, you should submit your materials to the appropriate TA's box by Tuesday at 5pm. I realize there is less time in the first week as all of us get into the swing of things, so you can also submit it later than that to get the first and second problem sets marked at the same time. After the lecture is split into classes, I will announce due dates for problem sets 2 and onward.