Focused Workshop on Group actions and equivalence relations 06/09/2025 - 06/13/2025 Erdős Center Description Organizers Clark Lyons (Renyi/ELTE)Petr Naryshkin (Renyi)Grigory Terlov (Renyi)Zoltan Vidnyanszky (ELTE) Invited Speakers Participants Anush Tserunyan (McGill University)David Kerr (Universität Münster)Sam Mellick (Jagiellonian University)Konrad Wrobel (Jagiellonian University)Jan Grebik (Masaryk University)Matthew Bowen (Oxford University)Colin Jahel (TU Dresden)Lukasz Grabowski (Leipzig University)