报告人： 李锦嘉 (Assistant Professor, University of Louisville, USA)

报告题目: Tor rigidity and Frobenius endomorphism
报告时间：6月19日 上午9:30-10:30 1418教室
报告地点：管理科研楼1418教室

摘  要：In a commutative ring R in characteristic p>o, one can view R as an R-module via the Frobenius map (which sends every element in R to its pth power). Avramov and Miller showed that over a complete intersection ring in characteristic p, this special module admits a so-called Tor rigidity property. We will discuss this property and show how this property can be applied to recover a result of Deligne about the torsion-freeness of some Picard groups. We will also show that this property does not generalize to Gorenstein rings in general. This is joint work with Dao and Miller.

主办单位:中国科学技术大学数学科学学院
        中科院吴文俊数学重点实验室
 
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