报告题目：Ghostly ideals in groupoid C*-algebras

报 告 人：章嘉雯副教授（复旦大学）

报告时间：2024年10月11日上午11:00-12:00

报告地点：数学科学学院301室

报告摘要: In this talk, we focus on a class of ideals (called ghostly ideals) in the reduced groupoid C*-algebra C*_r(G) for a locally compact Hausdorff and \’{e}tale groupoid G, motivated by the case of coarse groupoid. We use these ideals to provide a sandwiching result for ideals in C*_r(G), and to study inner and outer supports. We also apply our results to several families of ideals including tracial ideals and regular ideals. Finally, we would like to calculate some concrete examples if time permits. This is based on a joint work with Kang Li.

报告人简介：章嘉雯，复旦大学数学科学学院副教授，主要从事泛函分析的教学和科研工作，尤其在高指标理论中核心猜想粗Baum-Conne猜想的反例、指标代数的结构等研究上取得了突出成果。在 Adv. Math.，CMP，IMRN，Trans. AMS.，JFA等权威期刊发表论文10多篇，主持2024年度国家自然科学基金优秀青年科学基金项目、上海市领军人才（海外）项目，参与国家重点研发计划青年科学家项目。