Noncommutative Geometry Reading Seminar

2022 Fall: Groupoid C*-algebras

In the 2022 fall semester, we were running a seminar on Groupoids and C*-algebras.

We followed the text book A Tool Kit for Groupoid C*-algebras in the first couple of talks and then turned to related topics including but not limited to semigroups, graphs, foliations, and twisted groupoids.

For more information, please contact y.ge@math.leidenuniv.nl

The note of this seminar can be found here. Last updated: 7.2.2024.

Location:

Snellius Building, Room 408 (mostly, see changes below), from 14:15 to 16:00.

Schedule:

Date	Location	Speaker	Topic
9.13	Snellius 401	Yuezhao Li	Motivations, Definitions, and Examples of Groupoids
9.20	Snellius 401	Yufan Ge	Haar Systems and Convolution Algebras
9.27	–	–	No talk
10.4	Snellius 401	Jack Ekenstam	Groupoid Actions: Part 1
10.11	Snellius 407/409	Bram Mesland	Groupoid Actions: Part 2
10.18	Snellius 408	Dimitris Gerontogiannis	The Equivalence Theorem
10.25	Snellius 408	Bram Mesland	The Equivalence Theorem for Fell Bundles
11.1	Snellius 408	–	Middle Break: Problem Discussion
11.8	Snellius 408	Torstein Ulsnaes	Induced Representations
11.15	Snellius 408	Malte Leimbach	The Existence and Uniqueness of Haar Systems
11.22	Snellius 176	Jack Ekenstam	Inverse Semigroups and Groupoids
11.29	Snellius 408	Yuezhao Li	Tangent Groupoids and Index Theory
12.6	Snellius 408	Adam Rennie	Groupoids Suck Slightly More Than Everything Else
12.13	Snellius 408	Yufan Ge	Graph Groupoids and Doplicher-Roberts Algebras