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arXiv 1702.01455math.DS
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无穷测度中的无穷对称遍历指数及相关例子

Infinite symmetric ergodic index and related examples in infinite measure

Isaac Loh, Cesar Silva, Ben Athiwaratkun

摘要:

定义了一个无限保测变换保测变换,若它与它的逆变换的有限笛卡儿积都是遍历的,则它具有无穷对称遍历指数,并证明了无穷对称遍历指数并不意味着幂积都是保守的,因此也不意味着幂弱混合.给出了$k$ -重和无穷对称遍历指标的一个充分条件,并利用它回答了乘积守恒性和乘积遍历性之间的关系问题。我们还证明了一类具有无穷对称遍历指数的秩1变换不是幂弱混合的,并精确刻画了一类幂弱变换,推广了已有的例子.

英文摘要:

We define an infinite measure-preserving transformation to have infinite symmetric ergodic index if all finite Cartesian products of the transformation and its inverse are ergodic, and show that infinite symmetric ergodic index does not imply that all products of powers are conservative, so does not imply power weak mixing. We provide a sufficient condition for $k$-fold and infinite symmetric ergodic index and use it to answer a question on the relationship between product conservativity and product ergodicity. We also show that a class of rank-one transformations that have infinite symmetric ergodic index are not power weakly mixing, and precisely characterize a class of power weak transformations that generalizes existing examples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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