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April  2010, 4(2): 227-241. doi: 10.3934/jmd.2010.4.227

On the work of Dolgopyat on partial and nonuniform hyperbolicity (Brin Prize article)

Yakov Pesin 1,

1. 

Department of Mathematics, McAllister Building, Pennsylvania State University, University Park, PA 16802

Received  February 2010 Revised  May 2010 Published  August 2010

This paper is a nontechnical survey and aims to illustrate Dolgopyat'sprofound contributions to smooth ergodic theory. I will discuss some ofDolgopyat's work on partial hyperbolicity and nonuniform hyperbolicity withemphasis on the interaction between the two-the class of dynamical systemswith mixed hyperbolicity. On one hand, this includes uniformlypartially hyperbolic diffeomorphisms with nonzero Lyapunov exponents in thecenter direction. The study of their ergodic properties has provided analternative approach to the Pugh-Shub stable ergodicity theory for bothconservative and dissipative systems. On the other hand, ideas of mixedhyperbolicity have been used in constructing volume-preservingdiffeomorphisms with nonzero Lyapunov exponents on any manifold.
Keywords: Brin prize, accessibility, SRB-measures., partial hyperbolicity, stable ergodicity, Lyapunov exponents, Dolgopyat.
Mathematics Subject Classification: 58F0.
Citation: Yakov Pesin. On the work of Dolgopyat on partial and nonuniform hyperbolicity. Journal of Modern Dynamics, 2010, 4 (2) : 227-241. doi: 10.3934/jmd.2010.4.227
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