Hall algebras associated to root categories

 2022年10月31日 9：30-10：30

稿件来源：张海诚 副教授 发布人：叶海霞 发布日期：2022-10-31

讲座时间 Datetime: 2022年10月31日，星期一，9：30-10：30

地点 Venue: 腾讯线上会议：888-466-2697

主持人 Host：黄敏

报告人 Speaker: 张海诚 

单位 Affiliation: 南京师范大学

报告摘要 Abstract:

Let A be a finitary hereditary abelian category. We define a Hall algebra for the root category of A by applying the derived Hall numbers of the bounded derived category D^b(A), which is proved to be isomorphic to the Drinfeld double Hall algebra of A. In the appendix, we also define the 1-periodic derived Hall algebra via the derived Hall numbers of D^b(A).