When Are Two Subgroups of the Rationals Isomorphic?

DOI10.2307/3219203zbMath1077.20064OpenAlexW4254760517MaRDI QIDQ4654205

Friedrich L. Kluempen, Denise M. Reboli

Publication date: 3 March 2005

Full work available at URL: http://www.maa.org/pubs/mathmag.html

zbMATH Keywords

typesheightssubgroups of the rationals

Mathematics Subject Classification ID

Subgroups of abelian groups (20K27) Torsion-free groups, finite rank (20K15) Introductory exposition (textbooks, tutorial papers, etc.) pertaining to group theory (20-01)

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