Sui gruppi nei quali sono normali sensitivi tutti i sottogruppi
Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali, Série 8, Tome 64 (1978) no. 3, pp. 265-269
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We consider groups whose subgroups are all normal-sensitive. We prove that these groups are separated and that their second derived group is a periodic group with all elements odd order. We give criteria for solvability of such groups and we prove that among these groups those which are solvable are exactly the solvable groups in which normality is a transitive relation.
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