On the Volume of K-Semistable Fano Manifolds

2025-12-15 16:31:52

时间:2025年12月17-19日,14:00-17:00

地点:E14-301

主持人:韩骥原,理论科学研究院

主讲人:缪铭昊,南京大学

报告主题:On the Volume of K-Semistable Fano Manifolds

报告摘要:In 2015, K. Fujita showed that for any n-dimensional K-semistable Fano manifold, the anti-canonical volume is always less than or equal to that of complex projective space (CP^n). In this talk, I will discuss my recent joint work with Chi Li on characterizing the second-largest volume. We prove that for any n-dimensional K-semistable Fano manifold X that is not isomorphic to CPⁿ, the volume is at most 2n^n, with the equality holds if and only if X is a smooth quadric hypersurface or CP^1 × CP^{n-1}. This result applies, in particular, to all Fano manifolds admitting Kähler–Einstein metrics. Our proof is based on a new connection between K-stability and minimal rational curves.