Tomorrow's lecture will fix some ¡­

• Tomorrow's lecture will fix some terminology, and then start on convex sets. You might want to browse the convexity topic on an informal level before the lecture. I will introduce it in an axiomatic way, and I am very much aware that some of you might find it a bit scary; please bear in mind that the more difficult parts are not very exam relevant. (Then why teach those parts? Because I think you might need to have seen this axiomatic manipulation for the purposes of some theoretic microeconomics, including the 2nd theorem of welfare economics.)

¨C NCF