Artem Dudko: On characters and invariant random subgroups of approximately finite and weakly branch groups 

Előadó: Artem Dudko

Cím: On characters and invariant random subgroups of approximately finite and weakly branch groups 

Absztrakt:  In the first part of my talk I will describe indecomposable characters and ergodic invariant random subgroups (EIRS) for a certain large class of approximately finite groups. In the second part I will discuss characters of weakly branch groups associated to EIRS constructed by Ference Bencs and Laszlo Toth. The talk is based on joint results with Konstantin Medynets (first part) and Rostislav Grigorchuk (second part).