Ergodic group automorphisms and specification

Ergodic group automorphisms and specification
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遍历群自同构和规范

DOI:
10.1007/bfb0063287
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发表时间:
1979
期刊:
Journal of Materials Science & Technology
影响因子:
--
通讯作者:
D. Lind
D. Lind
中科院分区:
--
文献类型:
--
作者:
D. Lind

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§ 2.我是说,我是说。当处理群自同构的遍历性质时,出现了以下形式的tCm的变换,l。et U:X-~ X是Lebesque sl~ ace(X,~,)的可逆保测变换(以下简称为”映射”),S:G~ G是紧可度量化群C的(连续的,代数的)自同构,记为addi~-i。vely,.~ ntld(~:X-~ G是一个可测的。是个好地方。构造斜积U x S:X x(x-~ X×(x))定义i~ y(U x(2 ′ S)(x,I~)=([:x,Sg+.(x))。这样的斜积出现,例如,当存在(J)的闭子群H在S下不变时。或取Borel截面
§ 2.. Sp. J. itting~ k _ e~ rod uc t s. When dealing with the ergodic properties of group automorphisms, tronsformations of the following form oftCm arise, l. et U: X-~ X be an invertible measure-preserving transformation (hereafter shortened to" map") of a Lebesque sl~ ace(X,~,), S: G~ G be a (continuuus, algebraic) automorphism of a compact metrizable group C written addi~-i. vely,.~ ntld(~: X-~ G be a measurabl. e luuction. Form the skew product U x S: X x (;-~ X×(; defined i~ y (U x (2'S)(x, I~)=([: x, Sg+.~(x)). Such skew products arise, for example, wilen there is a closed subgroup H of (J that is invarLant under S.['or by taking a Borel cross-section