Date:	Tue, September 21, 2021
Time:	14:00
Place:	Room 120 Research I and online via zoom (please write the organizer (s.petrat AT jacobs-university.de) for the meeting id and passcode)

Abstract: The talk will be based on results reported in my recent arxiv-preprints 2107.03319, 2107.00569, 2103.16540, 2103.08653, 2102.03904, 2101.04495, 2101.01803.