Regionally proximal relation of order d is an equivalence one for minimal systems and a combinatorial consequence
Regionally proximal relation of order d is an equivalence one for minimal systems and a combinatorial consequence
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d 阶区域邻近关系是最小系统的等价关系和组合结果
DOI:
10.1016/j.aim.2012.07.012
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发表时间:
2010-07
影响因子:
1.7
通讯作者:
Ye, Xiangdong
中科院分区:
文献类型:
--
作者:
Shao, Song;Ye, Xiangdong
Inverse limits of nilsystems in topologically dynamical systems were characterized by Host, Kra and Maass recently. Namely, for each d∈N a certain generalization of the regionally proximal relation was introduced, and for a distal minimal system it was shown that such a relation is an equivalence one, which determines the maximal d-step nilfactor. One of the main results in this article is to show that the above results hold for a general minimal system. A combinatorial consequence is also deduced, which is the topological correspondence of the result obtained by Host and Kra for positive upper Banach density subsets using ergodic methods.
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