题目:  1/4-pinched contact sphere theorem

报告人：葛健（北京国际数学中心）

时间: 2015年4月20日, 周一 下午15:00-16:30 

地点：管研楼1611

摘要：  In this talk I will present a proof of 1/4-pinched sphere theorem, which says if the curvature of a contact 3-manifold with compatible Riemannian metric is 1/4-pinched, then the contact structure is universal tight. We also have some results for open manifolds. This is a joint work with Yang Huang.

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