- Institute
- People
- Departments
- Algebra, Geometry and Mathematical Physics (AGMP)
- Branch in Brno (BB)
- Constructive Methods of Mathematical Analysis (CMMA)
- Didactics of Mathematics (DM)
- Evolution Differential Equations (EDE)
- Mathematical Logic, Algebra and Theoretical Computer Science (MLATCS)
- Topology and Functional Analysis (TFA)
- Archive of departments
- Positions
- Research
- Events
- Calendar
- Partnerships
- Links
Noncommutative Geometry and Topology in Prague
Essential groupoid C*-algebras of non-Hausdorff groupoids
Speaker’s name:
Jonathan Taylor
Speaker’s affiliation:
University of Göttingen
Place:
This talk will take place in the blue seminar room, back building, Žitná 25.
It will also be broadcast on Zoom:
https://cesnet.zoom.us/j/91975183920?pwd=SGdlRUhLS21HUnVFTXBKcE1vYXlrQT09
Meeting ID: 919 7518 3920
Passcode: 102707
It will also be broadcast on Zoom:
https://cesnet.zoom.us/j/91975183920?pwd=SGdlRUhLS21HUnVFTXBKcE1vYXlrQT09
Meeting ID: 919 7518 3920
Passcode: 102707
Date:
Tuesday, 22. March 2022 - 16:00 to 17:00
Abstract:
Many interesting groupoids arise from common constructions from dynamical systems, and these constructions do not always guarentee the result groupoid is Hausdorff, but rather non-Hausdorff ‘in a controlled way’. The typical construction of the reduced groupoid C*-algebra then no longer gives the ‘smallest’ groupoid C*-algebraic construction associated to such a groupoid, leading us to define a smaller one. We will explore the definition and some properties of the essential groupoid C*-algebra, as well as some conditions for when an open subgroupoid gives the same groupoid C*-algebra