We look at Baumslag–Solitar groups. Lower central series are given for residually nilpotent Baumslag–Solitar groups. For some Baumslag–Solitar groups that are not residually nilpotent, we find the intersection of all terms of the lower central series. Also we point out non-Abelian Baumslag–Solitar groups having lower central series of length 2. For some Baumslag–Solitar groups, a connection is found between an intersection of subgroups of finite index and an intersection of terms of the lower central series.
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Translated from Algebra i Logika, Vol. 59, No. 4, pp. 413-431, July-August, 2020. Russian https://doi.org/10.33048/alglog.2020.59.401.
M. V. Neshchadim is Supported by RFBR, project No. 19-01-00569.
V. G. Bardakov is Supported by RFBR, project No. 18-01-00057.
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Bardakov, V.G., Neshchadim, M.V. Lower Central Series of Baumslag–Solitar Groups. Algebra Logic 59, 281–294 (2020). https://doi.org/10.1007/s10469-020-09601-z
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DOI: https://doi.org/10.1007/s10469-020-09601-z