Explore geometric properties of topological groupoids and their applications to C∗-algebras and group structures in this 48-minute lecture by Xin Ma at the Fields Institute. Delve into the third part of a series examining the intricate connections between topology, algebra, and geometry. Gain insights into advanced concepts in operator algebra as part of the Operator Algebra Seminar and the Thematic Program on Operator Algebras and Applications. Enhance your understanding of complex mathematical structures and their implications in various fields of study.