报告题目：Haagerup property of semigroup crossed products

报告简介：In this talk, we focus on the Haagerup property of semigroup  crossed products for lattice ordered groups. Let (G,G+) be a lattice  ordered group. We show that the reduced semigroup C*-algebra has the Haagerup property if and only if G has the Haagerup  property. Assume that G acts on a unital C*-algebra A through an action α. We show that if the reduced semigroup crossed product  has the Haagerup property, then both A and G have the Haagerup property. On the other hand, it is shown that if (G,G+) is s-amenable and A has the Haagerup property, then the reduced  semigroup crossed product has the Haagerup property.

报告人：孟庆，曲阜师范大学副教授，南开大学获得理学博士学位，主要研究方向为算子代数、泛函分析。主持或参与多项国家级和省部级科研项目。近年来在Journal of Mathematical Analysis and Applications、Linear and Multilinear Algebra、Acta Mathematica Sinica, Rocky Mountain Journal of Mathematics等SCI期刊上发表论文十余篇。

报告时间：2021年12月13日下午2:30--5:30

报告地点：腾讯会议，ID： 576-251-781

主办单位：扬州大学数学科学学院

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