I used to teach several microeconomics courses. Two of them were dedicated to MA students, and one to PhD candidates. There were two MA curricula that required two different programmes: one for Quantitative Finance (QF), and the other for International Economics (IE) students. The former led to a degree granted by the University of Warsaw while the latter involved cooperation with KU Leuven, resulting in a degree granted by both universities jointly. The PhD programme was supposed to review the entire field of microeconomics as covered by the classical textbook (Andreu Mas Collel, Michael D. Whinston, Jerry R. Green, Microeconomic Theory, Oxford University Press 1995), and to let students be aware of analytical methods applied by contemporary economists.

The last years of teaching these courses coincided with the COVID pandemics, which required switching to the online regime. This prompted me to prepare their written simplified versions.