Let $f$ be a partially hyperbolic diffeomorphism. $f$ is called has the quasi-shadowing property if for any pseudo orbit $\{ x_k\}_{ k\in \mathbb{ Z}}$, there is a sequence $\{ y_k\}_{ k\in \mathbb{ Z}}$ tracing it in which $y_{ k+1}$ lies in the local center leaf of $f(y_k)$ for any $k\in \mathbb{ Z}$. $f$ is called topologically quasi-stable if for any homeomorphism $g$ $C^0$-close to $f$, there exist a continuous map $\pi$ and a motion $\tau$ along the center foliation such that $\pi\circ g=\tau\circ f\circ\pi$. In this paper we prove that if $f$ is dynamically coherent then it has quasi-shadowing and topological quasi-stability properties.
Categories: math.DS