An open set of maps for which every point is absolutely nonshadowable

被引:28
作者
Yuan, GC [1 ]
Yorke, JA
机构
[1] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA
[2] Univ Maryland, Dept Math, College Pk, MD 20742 USA
关键词
D O I
10.1090/S0002-9939-99-05038-8
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We consider a class of nonhyperbolic systems, for which there are two fixed points in an attractor having a dense trajectory; the unstable manifold of one has dimension one and the other's is two dimensional. Under the condition that there exists a direction which is more expanding than other directions, we show that such attractors are nonshadowable. Using this theorem, we prove that there is an open set of diffeomorphisms (in the C-r-topology, r > 1) for which every point is absolutely nonshadowable, i.e., there exists epsilon > 0 such that, for every delta > 0, almost every delta-pseudo trajectory starting from this point is epsilon-nonshadowable.
引用
收藏
页码:909 / 918
页数:10
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