【学术报告】Stein degree on log Calabi-Yau fibrations

报告人：曲三太（中国科学技术大学）

时 间：2025年11月26日10:30

地 点：海韵园实验楼S204

内容摘要:

Stein degree measures the number of connected components of general fibers of a projective morphism. A conjecture due to Caucher Birkar asserts that Stein degree of boundary divisors on log Calabi–Yau fibrations is bounded from above.  In this talk, I will present our recent progress that establishes the boundedness of Stein degree, thereby confirming Birkar’s conjecture in the general framework of generalised pairs. This talk is based on joint work with Caucher Birkar.

个人简介：

曲三太，中国科学技术大学几何与物理研究中心研究助理教授，研究领域为双有理几何，目前主要关注Fano簇和Calabi-Yau簇有界性相关的双有理几何问题，其研究工作发表在Internat. J. Math.、Michigan Math. J、J. Algebra等国际期刊。

联系人：周楚宇