走向现代数学学术报告 – 朱玉峻教授（No. 992)

报告题目：Rotational entropy for torus maps

报 告 人：朱玉峻 教授（厦门大学）

邀 请 人：李健 教授，王昕晟 副教授

报告时间：2026年11月22日 9点

报告地点：东海岸校区D209

报告摘要：In this talk, we consider the combination of the rotation theory and the entropy theory for the torus maps. The rotational entropies, including topological version and measure-theoretic version, are introduced. It is shown that the topological rotational entropy is a homotopy invariant, and there is a variational principle relating these two versions of rotational entropies. The rotational entropy is also considered for the random torus maps. This is a joint work with Weifeng Jiang and Zhengxing Lian.

报告人简介：朱玉峻，厦门大学教授，从事动力系统与遍历论领域的研究，主要研究内容为动力系统的拓扑性质和统计性质。主持国家自然科学基金多项，入选教育部新世纪优秀人才支持计划。在Advances in Mathematics, Transactions of American Mathematics Society，Ergodic Theory and Dynamical Systems，Journal of Differential Equations等期刊上发表论文50多篇。