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arXiv 0908.1643math.DS
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具有无穷不变测度和谱重数的混合结构

Mixing constructions with infinite invariant measure and spectral multiplicities

Alexandre I. Danilenko, Valery V. Ryzhikov

摘要:

引入了高阶无穷保测变换,并证明了它们在限制增长条件下是混合的。这是用来(i)实现每个子集$E\subset\Bbb N\cup\{\infty\}$作为混合遍历无限保测度变换的Koopman算子的重数函数的本质值的集合,(ii)构造混合幂弱混合无限保测度变换保测变换,(iii)构造具有简单谱的混合泊松自同构,等等.

英文摘要:

We introduce high staircase infinite measure preserving transformations and prove that they are mixing under a restricted growth condition. This is used to (i) realize each subset $E\subset\Bbb N\cup\{\infty\}$ as the set of essential values of the multiplicity function for the Koopman operator of a mixing ergodic infinite measure preserving transformation, (ii) construct mixing power weakly mixing infinite measure preserving transformations, (iii) construct mixing Poissonian automorphisms with a simple spectrum, etc.

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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