Explore a 53-minute lecture by Xin Ma from The Fields Institute on geometric properties of topological groupoids and their applications to C*-algebras and group structures. Delve into advanced mathematical concepts as part of the Operator Algebra Seminar series within the Thematic Program on Operator Algebras and Applications. Gain insights into the fourth installment of this topic, building upon previous discussions in the series. Examine the intricate relationships between topology, algebra, and geometry in this specialized mathematical field. Access additional resources and context through the provided abstract link and seminar information to enhance understanding of this complex subject matter.