Due to the current situation (SARS-CoV-2 Virus information by Austrian Health and International Affairs ministries, and JKU), the conference AAA100 planned in Linz from June 12-14, 2020 is cancelled. The Austrian "corona rules" do not permit conferences in June. This cancellation can also be seen as an adjournment sine die; the institute for algebra at JKU Linz will be happy to host a AAA-conference as soon as this will be feasible again. For further information, see the conference website, opens an external URL in a new window.