Approximation properties on invariant measure and Oseledec splitting in non-uniformly hyperbolic systems
Approximation properties on invariant measure and Oseledec splitting in non-uniformly hyperbolic systems
复制标题
非均匀双曲系统中不变测度和 Oseledec 分裂的近似性质
DOI:
10.1090/s0002-9947-08-04630-8
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发表时间:
2008-10
期刊:
影响因子:
--
通讯作者:
Liang Chao
中科院分区:
文献类型:
--
作者:
Sun Wenxiang;Liu Geng;Liang Chao
We prove that each invariant measure in a non-uniformly hyperbolic system can be approximated by atomic measures on hyperbolic periodic orbits. This contributes to our main result that the mean angle (Definition 1.10), independence number (Definition 1.6) and Oseledec splitting for an ergodic hyperbolic measure with simple spectrum can be approximated by those for atomic measures on hyperbolic periodic orbits, respectively. Combining this result with the approximation property of Lyapunov exponents by Wang and Sun, 2005 (Theorem 1.9), we strengthen Katok's closing lemma (1980) by presenting more extensive information not only about the state system but also its linearization. In the present paper, we also study an ergodic theorem and a variational principle for mean angle, independence number and Liao's style number (Definition 1.3) which are bases for discussing the approximation properties in the main result.
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