Garamvölgyi Dániel: Rigidity and reconstruction in matroids of highly connected graphs - ELTE Déli tömb 3-517 - - -
Zalán Gyenis (Jagiellonian University): Modal logics without deduction - Eötvös Loránd University Budapest Múzeum krt. 4/i Room 224 - - -
Clayton McDonald (Rényi Institute): A new construction of slice surfaces in 4-manifolds - Rényi, Turán Lecture Hall + Zoom - - -
Yue Erfei: The maximum sum of the sizes of all intersections within $m$-size families - Nagyterem - - -