The isomorphism theorem for Bernoulli flows

The isomorphism theorem for Bernoulli flows
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伯努利流的同构定理

DOI:
10.1016/0001-8708(73)90101-1
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发表时间:
1973
影响因子:
1.7
通讯作者:
D. Ornstein
D. Ornstein
中科院分区:
数学1区
文献类型:
--
作者:
D. Ornstein

文献摘要

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我们说流S1是有限熵的伯努利流,如果对于每个固定的to,St 0是有限熵的伯努利移位。文[2]证明了Bernoulli流的存在性。通过平凡的归一化(通过将所有的t乘以一个固定的常数来改变时间尺度;也就是说,通过一个固定的常数来加速或减慢流动),我们可以假设E(S,)= 1。在本文中,我们将证明任何两个伯努利流与上述规范化是同构的。我们说作用在X上的S1同构于作用在X上的S,如果存在X到X上的可逆保测映射y,并且对于每个固定的
We say that the flow S, is a Bernoulli flow of finite entropy if, for each fixed to, St0 is a Bernoulli shift of finite entropy. We proved the existence of Bernoulli flows in [2]. By a trivial normalization (change the time scale by multiplying all t by a fixed constant; that is, speeding up or slowing down the flow by a fixed constant) we can assume that E (S,)= 1. In this paper we will show that any two Bernoulli flows with the above normalization are isomorphic. We say S1 acting on X is isomorphic to S, acting on X if there is an invertible measure-preserving map y of X onto X and, for each fixed