XLI Workshop on Geometric Methods in Physics Białystok, 1-6.07.2024 XIII School on Geometry and Physics Białystok, 8-12.07.2024

Bartosz Kwaśniewski

Topological freeness and ideals in twisted Banach algebra crossed products

We generalize some fundamental C*-algebraic result for crossed products of discrete transformation groups to the realm of Banach algebras and twisted
actions. We show that topological freeness is equivalent to the
intersection property for all reduced twisted Banach algebra crossed
products coming from subgroups, and in the untwisted case to a generalized
intersection property for a full Lp-operator algebra crossed product.
This gives efficient simplicity criteria for various Banach algebra crossed products.

This talk is based on a joint work with Krzysztof Bardadyn
Event sponsored by
University of Białystok
University of Białystok