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首页> 外文期刊>Annales scientifiques de l'Ecole normale superieure >EIGENVALUES AND SIMPLICITY OF INTERVALEXCHANGE TRANSFORMATIONS
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EIGENVALUES AND SIMPLICITY OF INTERVALEXCHANGE TRANSFORMATIONS

机译:区间转换的特征值和简单性

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摘要

For a class of d-interval exchange transformations, which we call the symmetric class, we define a new self-dual induction process in which the system is successively induced on a union of sub-intervals. This algorithm gives rise to an underlying graph structure which reflects the dynamical behavior of the system, through the Rokhlin towers of the induced maps. We apply it to build a wide as-sortment of explicit examples on four intervals having different dynamical properties: these include the first nontrivial examples with eigenvalues (rational or irrational), the first ever example of an exchange on more than three intervals satisfying Veech's simplicity (though this weakening of the notion of min-imal self-joinings was designed in 1982 to be satisfied by interval exchange transformations), and an unexpected example which is non uniquely ergodic, weakly mixing for one invariant ergodic measure but has rational eigenvalues for the other invariant ergodic measure.
机译:对于一类d间隔交换变换(我们称为对称类),我们定义了一个新的自对偶归纳过程,在该过程中,系统在子间隔的并集上相继被归纳。该算法通过诱导图的Rokhlin塔产生了一个底层图结构,该图结构反映了系统的动态行为。我们将其应用于在四个具有不同动力学特性的区间上建立各种各样的显式例子:这些例子包括第一个具有特征值(有理或无理)的非平凡例子,有史以来第一个在三个以上区间进行交换的例子满足了Veech的简单性(尽管这种弱最小自连接的概念是在1982年设计的,可以通过间隔交换变换来满足),还有一个意想不到的示例,它不是唯一遍历遍历的,对于一个不变遍历遍历的度量是弱混合的,但对于该遍历具有合理的特征值其他不变的遍历测度。

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