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The $n$-ary adding machine and solvable groups | ||
| International Journal of Group Theory | ||
| مقاله 7، دوره 2، شماره 4، اسفند 2013، صفحه 43-88 اصل مقاله (693.89 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22108/ijgt.2013.2871 | ||
| نویسندگان | ||
| Josimar da Silva Rocha1؛ Said Sidki* 2 | ||
| 1Instituto Federal de Educacao | ||
| 2Universidade De Brasilia | ||
| چکیده | ||
| We describe under various conditions abelian subgroups of the automorphism group $\mathrm{Aut}(T_{n})$ of the regular $n$-ary tree $T_{n}$, which are normalized by the $n$-ary adding machine $\tau =(e, \dots, e,\tau )\sigma _{\tau }$ where $\sigma _{\tau }$ is the $n$-cycle $\left( 0,1, \dots, n-1\right) $. As an application, for $n=p$ a prime number, and for $n=4$, we prove that every soluble subgroup of $\mathrm{Aut}(T_{n})$, containing $\tau $ is an extension of a torsion-free metabelian group by a finite group. | ||
| کلیدواژهها | ||
| Adding machine؛ Tree automorphisms؛ Automata؛ solvable groups | ||
| مراجع | ||
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S. N. Sidki (2003) The binary adding machine and solvable groups Internat. J. Algebra Comput. 13 (1), 95-110
S. N. Sidki (2005) Just-Non-(abelian by P-type) Groups Progr. Math. 248, 389-402
M. Vorobets and Y. Vorobets (2007) On a free group of transformations defined by an automaton Geom. Dedicata 124, 237-249
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