报告人：左怀清
报告地点：腾讯会议ID:924 215 805
报告时间：2021年11月26日星期五14:05-15:05
邀请人：陈亮
报告摘要：
Let R be a positively graded algebra which define an isolated singularity. A long-standing conjecture in singularity theory is the non-existence of negative weight derivations on certain R. Halperin and Alexsandrov conjectured that there are no negative weight derivations when R is a complete intersection graded Artinian algebra, and Wahl conjectured there are no negative weight derivations on R when R is isolated normal singularity admits a good $C^*$ action. This problem is also important in rational homotopy theory. In this talk, we will briefly review the background and present our recent progress on some problems of several derivations Lie algebras associated to singularities.
会议密码：5268
主讲人简介：
左怀青，现任清华大学数学系副教授、博士生导师。毕业于美国伊利偌伊大学芝加哥分校并获博士学位。在代数几何、奇点理论方面取得了一系列重要成果，先后在J. Eur. Math. Soc.，J. Differential Geom., Math. Z.等国际著名期刊上发表论文三十多篇。自回国工作后，主持两项国家自然科学基金，参与一项国家自然科学基金重点项目。多次在重要国际学术会议上作大会报告，特别地应邀在2017年首届世界华人数学家联盟年会大会上作45分钟特邀报告。
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