算子代数讨论班

报告题目:  Quasi-local algebras and their projections

报 告 人: 章嘉雯（复旦大学）

时      间: 2026年4月24日, 14:00-15:00

地      点:海纳苑2幢202

摘      要: Quasi-local algebras are operator algebras associated with metric spaces, which encode their coarse geometry. They were introduced by John Roe and played an important role in the study of higher index theory, since their K-theories serve as receptacles for higher indices of pseudo-differential elliptic operators on open manifolds. Compared to the classical Roe algebras, the structures of quasi-local algebras are more complicated and it is a long-standing question whether their K-theories are the same. In this talk, we introduce state-of-the-art results concerning the relation between their structures, and our recent progress on the projections in these algebras. This is joint work with Jingming Zhu.

联系人：刘伟华（lwh.math@zju.edu.cn）