Change of time, ++

1) So the time change is implemented.

• In particular, the next lecture is Tuesday at 10:15 - that one is at HH101. We could discuss whether ES1220 is better, but not for the upcoming one.
• The second lecture scheduled for Tuesday is out.
• That leaves us with one lecture missing from the schedule. There cannot be any lecture on Wed. Feb. 28, so we might try Thursday March 1; then possibly 14-16 is a better time? (I cannot commit to that timeslot yet.)

2) Seminar problems updated: added a couple since you have four more days. 

3) Lecture schedule for this week and next: updated to reflect reality. 

4) I should post notes for quasiconcave functions during the week-end. I will give "the graphical definition" for quasiconvexes, but soon change to quasiconcaves, as you probably use that more often.