Raul Ures教授做Colloquium第一百一十六期讲座
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2026年1月14日,应国家天元数学东南中心与厦门大学数学科学学院邀请,南方科技大学Raul Ures教授在厦门大学海韵园实验楼S105为我院师生做了题为《Monotony of the semiconjugacy for diffeomorphisms homotopic to pseudo-Anosov》的Colloquium讲座。讲座由厦门大学数学科学学院吴伟胜教授主持,厦门大学数学科学学院副院长朱玉峻教授为专家颁发Colloquium纪念牌。
本次讲座中,Raul Ures教授首先介绍了Handel的一个经典结果,即曲面上与一个pseudo-Anosov映射同伦且等熵的微分同胚,与该pseudo-Anosov映射之间存在半共轭映射。随后,他介绍了利用可数符号动力系统证明这类微分同胚具有唯一的最大熵测度。通过最大熵测度可以证明上述半共轭映射是单调的,从而否定了Handel论文中的一个论述。现场观众对这个报告展现出浓厚兴趣,提出了一些问题,Ures教授一一耐心进行了解答。
专家简介:Raul Ures completed his PhD studies at IMPA, Rio de Janeiro. He was a professor at the University of the Republic, Uruguay, and is currently a professor at the Southern University of Science and Technology in Shenzhen. He has been selected for China’s national talent initiatives and Shenzhen’s "Peacock Plan" for high-level overseas talents. He has several publications in prestigious journals such as Inventiones Mathematicae, Acta Mathematica, Duke Mathematical Journal, etc. His main research areas are dynamical systems and ergodic theory.
