Summary
If a finite abelian (p, q)-group whosep-Sylow subgroup is cyclic is factorized by subsets of cardinalitiesq or a power ofp, then at least one of the factors is periodic.
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Szabó, S. On a problem of A. D. Sands. Aeq. Math. 38, 186–191 (1989). https://doi.org/10.1007/BF01840004
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DOI: https://doi.org/10.1007/BF01840004