Draft note for Tuesday, + ...

Short draft note is a bit old/new/borrowed/blue again. 

Then the schedule. Upon popular request, an experiment: turn my consultation hours into a "Mathematics 2 workshop" thing. See http://www.uio.no/studier/emner/sv/oekonomi/ECON4140/v18/timeplan/index.html#SEM-F . (None the first Wednesday after Easter.)