On Sushchansky \(p\)-groups

We study Sushchansky \(p\)-groups introduced in [Sus79]. We recall the original definition and translate it into the language of automata groups. The original actions of Sushchansky groups on \(p\)-ary tree are not level-transitive and we describe their orbit trees. This allows us to simplify the de...

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Datum:2018
Hauptverfasser: Bondarenko, Ievgen V., Savchuk, Dmytro M.
Format: Artikel
Sprache:English
Veröffentlicht: Lugansk National Taras Shevchenko University 2018
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Online Zugang:https://admjournal.luguniv.edu.ua/index.php/adm/article/view/841
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Назва журналу:Algebra and Discrete Mathematics

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Algebra and Discrete Mathematics
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Zusammenfassung:We study Sushchansky \(p\)-groups introduced in [Sus79]. We recall the original definition and translate it into the language of automata groups. The original actions of Sushchansky groups on \(p\)-ary tree are not level-transitive and we describe their orbit trees. This allows us to simplify the definition and prove that these groups admit faithful level-transitive actions on the same tree. Certain branch structures in their self-similar closures are established. We provide the connection with, so-called, \(\mathsf{G}\) groups [BGS03]  that shows that all Sushchansky groups have intermediate growth and allows to obtain an upper bound on their period growth functions.