Institute of Matematics of Polish Academy of Sciences,
Warsaw, Poland,May 20-24, 2019
Uri Bader (Weizmann Institute of Science, Israel)
Pierre-Emmanuel Caprace (Université catholique de Louvain, Belgium)
Tadeusz Januszkiewicz (Uniwersytet Wrocławski and IMPAN)
Piotr Nowak (Uniwersytet Warszawski and IMPAN)
Damian Osajda (Uniwersytet Wrocławski and IMPAN)
Piotr Przytycki (McGill University, Canada)