The SRB measures for pointwise hyperbolic systems on open regions

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:胡虎翼
:2021-07-08 09:00
:腾讯会议 ID:566715784(无密码)

报告人:胡虎翼(美国密歇根州立大学)

时  间:78日上午9:00

地  点:腾讯会议 ID566715784(无密码)

内容摘要: A pointwise partially hyperbolic diffeomorphism is different from a partially hyperbolic one if the expansion and contraction depend on points.  If the system is defined on an open set, then the hyperbolicity may not be uniform.  We show that under certain conditions such a system has unstable and stable manifolds, and admits a finite or an infinite u-Gibbs measure. If the system is pointwise hyperbolic, then the u-Gibbs measure $\mu$ is a Sinai-Ruelle-Bowen (SRB) measure or an infinite SRB measure.  As applications, we show that some almost Anosov diffeomorphisms and gentle perturbations of Katok's map have the properties. This is a joint work with Jianyu Chen and Yunhua Zhou.

人简介:

胡虎翼,美国密西根州立大学数学系教授。1982年硕士毕业于北京大学,1993年于美国亚利桑那大学取得博士学位。曾先后任教于北京大学,美国马里兰大学、卫斯理安大学、南加州大学、宾夕法尼亚州立大学。近年来曾担任南方科技大学访问教授,苏州大学讲座教授。胡虎翼教授长期从事光滑动力系统遍历理论及分形维数等方面的研究,先后主持美国国家自然科学基金多项。在 Comm. Math. Phys.Adv. Math.Trans. AMS., Ergodic Theory Dynam. Systems等权威学术期刊发表论文40余篇。

 

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