The PIMS Postdoctoral Fellow Seminar: Benjamin Anderson-Sackaney

  • Date: 01/31/2024
Benjamin Anderson-Sackaney, USaskatchewan



From Groups to Quantum Groups and their Operator Algebras


Every group admits a unitary representation on a Hilbert space. In other words, every group can be realized concretely as symmetries on a Hilbert space. From these representations we can construct objects known as C*-algebras. This invites the use of tools from the theory of C*-algebras to the study of groups as well as provides interesting examples of C*-algebras for C*-algebraists. Celebrated developments of the past decade in the operator algebras community include group dynamical characterizations of the so-called unique trace property and C*-simplicity. Quantum groups for us are generalizations of groups in the sense that they are objects that "act quantumly on Hilbert spaces" and are defined via the associated C*-algebras. We will discuss all notions above (including defining a Hilbert space) as well as a recent development of the unique trace property for discrete quantum groups.


Speaker biography: Benjamin Anderson-Sackaney is a PIMS-Simons Postdoctoral fellow at the University of Saskatchewan under the sponsorship of Ebrahim Samei. Previously, he was a postdoc at the Université de Caen-Normandie under the supervision of Roland Vergnioux. He completed his PhD at the University of Waterloo under the supervision of Michael Brannan and Nico Spronk in 2022. His main research interests are on the interactions between objects that "act quantumly on Hilbert spaces" (quantum groups, rigid C*-tensor categories, etc), operator algebras, abstract harmonic analysis (e.g. generalized Fourier transform), and dynamics.

Benjamin is originally from Northeastern Ontario, native of the city of Timmins. Outside of math he enjoys running, reading, sports, video games, board games, making hot sauce, and nature.



This event is part of the Emergent Research: The PIMS Postdoctoral Fellow Colloquium Series

Other Information: 

This seminar takes places across multiple time zones: 9:30 AM Pacific/ 10:30 AM Mountain / 11:30 AM Central


Register via Zoom to receive the link (and reminders) for this event and the rest of the series.


See past seminar recordings on MathTube.