Dear Student, you are registered in uspace at "VO Group theory (2020S)". Due to Corona there will be a combined "take-home exam" for the lecture and the exercise group together. So the VO with exercise group is converted to a VU. The task is to submit a handwritten solution to the exercises 9,15,20,23,24,28,36,37,40,42 from the exercise collection at my homepage. The deadline is Tuesday June 30-th 2020, 24:00 Please note: 1. Use only black or blue pencil and white paper. 2. Write CLEARLY and LEGIBLY and give a reasoning for each step. You can use and cite results from my lecture notes. If you need a result not written there, give a reference or give a proof, if it is not too long. 3. Sign the last page with date and location. 4. Take a photo of each page and combine all pages into one pdf-file in the end. Send this to my email. 5. If you don't want to have an exam, please let me know soon, so I can deregister you. With best regards, Dietrich Burde