Abstract
The notion of a power MR-group, where R is an arbitrary associative ring with unity, was introduced by R. Lyndon. A. G. Myasnikov and V. N. Remeslennikov gave a more precise definition of an R-group by introducing an additional axiom. In particular, the new notion of a power MR-group is a direct generalization of the notion of an R-module to the case of noncommutative groups. In the present paper, central series and series of commutants in MR-groups are introduced. Three versions of the definition of nilpotent power MR-groups of step n are discussed. We prove that all these definitions are equivalent for n = 1, 2. The question on the coincidence of these notions for n > 2 remains open. Moreover, we prove that the tensor completion of a 2-step nilpotent MR-group is 2-step nilpotent.
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Translated from Itogi Nauki i Tekhniki, Seriya Sovremennaya Matematika i Ee Prilozheniya. Tematicheskie Obzory, Vol. 177, Algebra, 2020.
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Amaglobeli, M., Bokelavadze, T. On Nilpotent Power MR-Groups. J Math Sci 275, 653–659 (2023). https://doi.org/10.1007/s10958-023-06706-5
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DOI: https://doi.org/10.1007/s10958-023-06706-5