For a graph of groups, elementary conditions are derived that are necessary and sufficient for its fundamental group to be isomorphic to a subgroup of a Baumslag–Solitar group with various simple parameters. This gives a description of all subgroups of such groups.
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Supported by the Russian Ministry of Education through the Analytical Departmental Target Program (ADTP) “Development of Scientific Potential of the Higher School of Learning” (project No. 2.1.1.419).
Translated from Algebra i Logika, Vol. 48, No. 1, pp. 3-30, January–February, 2009.
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Dudkin, F.A. Subgroups of Baumslag–Solitar groups. Algebra Logic 48, 1–19 (2009). https://doi.org/10.1007/s10469-009-9038-0
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DOI: https://doi.org/10.1007/s10469-009-9038-0