Bálint Farkas (University of Wuppertal): Three faces of operator semigroups - Rényi, Nagyterem + Zoom - - -
Keith Kearnes (University of Colorado Boulder): Varieties of algebras whose commutator operation is commutative - Rényi, Nagyterem + Zoom - - -
Takafumi Miyazaki (Gunma University): Number of solutions to a special type of unit equations in two unknowns II - Online, Webex webinar - - -
Ádám Gyenge (Rényi Institute): Blow-ups and the quantum spectrum of surfaces - Rényi, Nagyterem + Zoom - - -