The Zappa–Szép product of groupoid twists

Add to your list(s) Download to your calendar using vCal

• Anna Duwenig (University of New South Wales)
• Tuesday 15 July 2025, 11:15-11:55
• External.

If you have a question about this talk, please contact nobody.

TGAW02 - C*-algebras: classification and dynamical constructions

The Zappa–Szép (ZS) product of two groupoids is a generalization of the semi-direct product: instead of encoding one groupoid action by homomorphisms, the ZS product groupoid encodes two (non-homomorphic, but “compatible”) actions of the groupoids on each other. Together with my collaborator Boyu Li, I have been working on various ways of generalizing this construction to the world of C*-algebras. In this talk, I will introduce you to our generalization of the ZS product to two twists over groupoids and, if time permits, I will show how our construction ties in with Weyl twists from Cartan pairs arising from Kumjian—Renault theory.  Based on joint work with Boyu Li, New Mexico State University.

This talk is part of the Isaac Newton Institute Seminar Series series.

This talk is included in these lists:

• All CMS events
• External
• Featured lists
• INI info aggregator
• Isaac Newton Institute Seminar Series
• School of Physical Sciences
• bld31

Note that ex-directory lists are not shown.