4-16【王煦】Ross-Witt Nyström correspondence and Ohsawa-Takegoshi extension

发布时间:2026-03-26来源:几何与物理研究中心中文网页浏览次数:10

报告人:王煦挪威科技大学

时间:2026年4月16日14:30-15:30  

地点:上海研究院新园区1号楼A座1329&腾讯会议:942 663 0176,密码:202501


  

We obtain a general Ohsawa-Takegoshi extension theorem by using the Ross-Witt Nyström correspondence picture and Berndtsson's theorem in \cite{Bern20}. In the test configuration (ℂ∗-degeneration) case, our approach gives a quick proof of the Ohsawa-Takegoshi extension theorem without taking limit or using singular weight, which is very different from the Ohsawa-Chen-Blocki-Guan-Zhou approach and the Berndtsson-Lempert approach. Another advantage of our approach is that it fits better to the sharp estimate for the weighted Bergman kernel on compact manifold. Applications include a sharp lower bound of the Bergman kernel for compact Riemann surfaces and a non-vanishing theorem in terms of (weighted) Okounkov bodies.


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