∞
π Σ ∫ ∂ Δ √
Δ

学术报告

报告人:王贞琦(密歇根州立大学)

时  间:4月22日上午10:00

地  点:腾讯会议ID:840988192(无密码)

内容摘要:

We study the regularity of a conjugacy H between a hyperbolic toral automorphism A and its smooth perturbation f. We show that if H is weakly differentiable then it is C1+Hölder and, if A is also weakly irreducible, then H is C∞. As a part of the proof, we establish results of independent interest on Hölder continuity of a measurable conjugacy between linear cocycles over a hyperbolic system. As an application, we improve regularity of the conjugacy to C∞ in prior local rigidity results. This is a joint work with Boris Kalinin and Victoria Sadovskaya.

个人简介:

王贞琦,美国密歇根州立大学副教授,硕士毕业于北京大学,博士毕业于美国宾夕法尼亚州立大学,师从A. Katok,随后在耶鲁大学从事博士后研究(合作者G. Margulis)。研究方向为动力系统与遍历理论。主持3项美国国家基金,曾获美国“Career Award”,研究成果发表在 Geom. Funct. Anal.,Trans. Amer. Math. Soc., J. Funct. Anal., J. Mod. Dyn.等国际知名期刊上。

 

联系人:吴伟胜