Dense subgroups in the group of interval exchange transformations

The paper concerns the  characterization of the group \(\mathop{IET}\) of interval exchange transformations (iet). We investigate a class of rational subgroups of \(\mathop{IET}\). These are subgroups consisting of iet transformations defined by partitions with rational endpoints. We propose a chara...

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Bibliographic Details
Date:2018
Main Authors: Bier, Agnieszka, Sushchanskyy, Vitaliy
Format: Article
Language:English
Published: Lugansk National Taras Shevchenko University 2018
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Online Access:https://admjournal.luguniv.edu.ua/index.php/adm/article/view/1033
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Journal Title:Algebra and Discrete Mathematics

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Algebra and Discrete Mathematics
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Summary:The paper concerns the  characterization of the group \(\mathop{IET}\) of interval exchange transformations (iet). We investigate a class of rational subgroups of \(\mathop{IET}\). These are subgroups consisting of iet transformations defined by partitions with rational endpoints. We propose a characterization of rational subgroups in terms of infinite supernatural numbers and prove that every such subgroup is dense in \(\mathop{IET}\). We also discuss the properties of these groups.