On some generic classes of ergodic measure preserving transformations

On some generic classes of ergodic measure preserving transformations
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关于一些通用类遍历测度保持变换

DOI:
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发表时间:
2020
影响因子:
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通讯作者:
B. Weiss
B. Weiss
中科院分区:
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文献类型:
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作者:
E. Glasner;J. Thouvenot;B. Weiss

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<p>我们积极回答的问题Ryzhikov,即我们表明,是一个相对较弱的混合扩展是一个comeager性质的波兰组的措施保持变换。研究了几类相关的遍历变换及其相互关系。在本文的第二部分中,我们证明了,对于一个固定的遍历<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper T"> <mml:semantics> <mml:mi>不</mml:mi> <mml:annotation encoding="application/x-tex">不</mml:annotation> </mml:semantics> </mml:math> </inline-formula>与物业<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper A"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">一</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbf {A}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>,通用扩展名<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="ModifyingAbove upper T With caret"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mover> <mml:mi>不</mml:mi> <mml:mo>^<!-- ^ --></mml:mo> </mml:mover> </mml:mrow> <mml:annotation encoding="application/x-tex">宽帽{T}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>的<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper T"> <mml:semantics> <mml:mi>不</mml:mi> <mml:annotation encoding="application/x-tex">不</mml:annotation> </mml:semantics> </mml:math> </inline-formula>also has property<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper A"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">一</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbf {A}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>.这里<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper A"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">一</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbf {A}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>代表以下每个属性:(i)具有相同的熵<inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper T"> <mml:semantics> <mml:mi>不</mml:mi> <mml:annotation encoding="application/x-tex">不</mml:annotation> </mml:semantics> </mml:math> </inline-formula>,(ii)Bernoulli,(iii)K,(iv)松弛Bernoulli. </p>
<p>We answer positively a question of Ryzhikov, namely we show that being a relatively weakly mixing extension is a comeager property in the Polish group of measure preserving transformations. We study some related classes of ergodic transformations and their interrelations. In the second part of the paper we show that for a fixed ergodic <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper T"> <mml:semantics> <mml:mi>T</mml:mi> <mml:annotation encoding="application/x-tex">T</mml:annotation> </mml:semantics> </mml:math> </inline-formula> with property <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper A"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">A</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbf {A}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>, a generic extension <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="ModifyingAbove upper T With caret"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mover> <mml:mi>T</mml:mi> <mml:mo>^<!-- ^ --></mml:mo> </mml:mover> </mml:mrow> <mml:annotation encoding="application/x-tex">widehat {T}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> of <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper T"> <mml:semantics> <mml:mi>T</mml:mi> <mml:annotation encoding="application/x-tex">T</mml:annotation> </mml:semantics> </mml:math> </inline-formula> also has property <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper A"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">A</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbf {A}</mml:annotation> </mml:semantics> </mml:math> </inline-formula>. Here <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="bold upper A"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="bold">A</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbf {A}</mml:annotation> </mml:semantics> </mml:math> </inline-formula> stands for each of the following properties: (i) having the same entropy as <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper T"> <mml:semantics> <mml:mi>T</mml:mi> <mml:annotation encoding="application/x-tex">T</mml:annotation> </mml:semantics> </mml:math> </inline-formula>, (ii) Bernoulli, (iii)  K, and (iv) loosely Bernoulli.</p>
具有许多自连接的素数系统
DOI: 10.3934/jmd.2021007
发表时间: 2021
影响因子: 1.1
作者:
Chaika, Jon;Kra, Bryna
通讯作者: Kra, Bryna