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【学术预告】何孝凯:The total geodesic curvature and the $2+1$ dimensional hyperbolic mass

作者:时间:2026-05-20点击数:

报告题目: The total geodesic curvature and the $2+1$ dimensional hyperbolic mass

要: Consider a Jordan domain that is diffeomorphic to a closed two - dimensional disk with a smooth boundary. Assuming that the Gauss curvature of the domain has a negative lower bound, the Gauss - Bonnet formula provides an upper bound for the total geodesic curvature of the boundary curve. However, this bound inherently depends on the interior geometry of the region.

In this talk, we will introduce the notion of the hyperbolic Hamiltonian mass in (2 + 1) - dimensional gravity theory and discuss the upper bound for the total geodesic curvature expressed solely in terms of the boundary data. This talk is based on the joint work with Xiaoning Wu and Naqing Xie.

报告地点:理工北楼数学与统计学院315

报告时间2026529日星期五15:50-16:50

报告人简介:何孝凯,湖南第一师范学院教授。2003年本科毕业于中央民族大学,2008年硕士毕业于北京师范大学,2013年博士毕业于中国科学院大学,2013年7月入职湖南第一师范学院并工作至今,期间于2015-2021年在湖南师范大学从事博士后研究。目前主要研究方向为经典广义相对论,先后主持国家自然科学基金项目2项,获湖南省自然科学二等奖1项,在CVPDE、SCM、PRD、CQG、JMP等期刊发表论文40余篇。


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