提升和投射具有伪轨跟踪性质或可扩性的连续流

LIFTING AND PROJECTING CONTINUOUS FLOWS WITH PSEUDO ORBIT TRACING PROPERTY OR EXPANSIBILITY

本文证明了紧度量空间上的连续流经提升或投射后，其伪轨跟踪性质及可扩性是不变的；做为应用给出了不定向闭曲面上具有伪轨跟踪性质的Ｃｒ流的特征。

in this paper we prove that both the pseudo orbit tracing property and expansibility are invariant under lifting or projecting a continuous flow on a compact metric spare.Then we give the characterization of Cr flows with the pseudo orbit tracing property on nonorientable closed surfaces.