Concerning the number of basic subgroups. (English) Zbl 0139.25301


group theory
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[1] L. Fuchs,Abelian groups (Budapest, 1958). · Zbl 0091.02704
[2] D. Harrison, A characterization of torsion abelian groups once basic subgroups have been chosen,Acta Math. Acad. Sci. Hung.,11 (1960), pp. 335–339. · Zbl 0116.26002 · doi:10.1007/BF02020948
[3] P. Hill, A classification of direct sums of closed groups,Acta Math. Acad. Sci. Hung.,17 (1966), pp. 263–266. · Zbl 0144.26504 · doi:10.1007/BF01894872
[4] S. Khabbaz andE. A. Walker, The number of basic subgroups of primary groups,Acta Math. Acad. Sci. Hung.,15 (1964). · Zbl 0136.28902
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