报告人：魏春晖（浙江大学）
时间：2026年11月12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：277-513-260
In this talk, we study asymptotically locally hyperbolic (ALH) gravitational instantons and their connection to rational surfaces. We explain how to construct complete ALH hyperkähler metrics on the complement of a certain anticanonical elliptic curve in a smooth rational surface. This answers an existence question of Filip and Tosatti, motivated by a conjecture of Haskins, Hein, and Nordström. We then discuss the converse direction: every hyperkähler ALH gravitational instanton admits, for each induced complex structure, a compactification by such a curve in a rational surface.
