This is the website of R.R. van Hassel.
photograph during Corona period
Onderwijs:
Instructions of 2DL60 (2020-2021, Q1):
pdf-files 2DL60
mp4- and pdf-files of Complex Analysis (2020-2021, Q1);
mp4 and pdf-flies CA
The .xoj files can be looked wih the free program: xournal
Then you can write something or change something.
There is also a Windows-version of that free program.
There is also another version: xournalpp
just search on internet with: xournalpp windows
Video-Files of Lectures
2DL00-Notes
Answers-2WA80