Abstract
Two subgroupsH andK of a groupG are called cosubnormal if they are both subnormal in the subgroup generated by them. In this paper some subnormality criteria for cosubnormal subgroups of nilpotent-by-abelian groups are given.
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Franciosi, S., De Giovanni, F. A note on cosubnormal subgroups. Rend. Circ. Mat. Palermo 35, 466–471 (1986). https://doi.org/10.1007/BF02843914
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DOI: https://doi.org/10.1007/BF02843914