- The 10th lecture (with english and greek commentary) and its slides are available. Please check the calendar.
- Two mistakes were found in the 4th set and its answers - many thanks to Chrysafina for pointing them out. In particular, in Exercise 4 the answer contained a numerical error and in Exercise 9 (item 3) there was a typo in the statement. These mistakes affected multiple files, namely, the 4th set, the answers of the 4th set, the 9th lecture and its videos. Apart from the videos, you may download the revised versions.