Seminario Teoría de Grupos
Near actions
Ponente: Yves de Cornulier (Universidad de Lyon 1 - Claude Bernard)Fecha: miércoles 08 de marzo de 2023 - 10:00Lugar: Aula Roja, IFT
Resumen:
I'll introduce the notion of near actions (of groups on sets). These are defined similarly as actions, except that each group element acts "outside a finite subset" and the action axioms are satisfied "outside a finite subset". I will present many examples, and notably discuss the realizability conditions: is a given near action induced by a genuine action?