Two errors, one in the solutions to seminars 2 and 3 and one in the solution to seminar 4, have been corrected.
The plan for the lectures has been slightly revised. The document containing seminar problems is now complete.
The contact students are: Johan Michael Berentzen Hoem (jmhoem@student.sv.uio.no) and Hedda ?isj?foss (heddaoi@student.sv.uio.no).