5-14【张俊升】The Generalized Numerical Criterion for Semistability of Pairs: A Counterexample

发布时间:2024-04-12来源:几何与物理研究中心中文网页浏览次数:10

报告人:张俊升美国加州大学伯克利分校

时间:2024年5月14日10:00-11:00    

地点:中科大上海研究院2号楼414



Sean Paul proved that the Mabuchi functional, when restricted to Bergman metrics, can be characterized by two representations of SL(N,C). His introduction of semistability for pairs extends the notion of stability in classical geometric invariant theory. This raises the question of whether a generalized numerical criterion exists for determining the semistability of pairs, akin to the Hilbert-Mumford criterion. We give examples that demonstrate a negative answer to the generalized numerical criterion problem for pairs. Joint work with Sean Paul and Song Sun.