University of Isfahan International Journal of Group Theory 2251-7650 2 1 2013 03 01 Metahamiltonian groups and related topics 117 129 2673 10.22108/ijgt.2013.2673 EN Maria De Falco Dipartimento di Matematica e Applicazioni - University of Napoli "Federico II" Francesco De Giovanni Dipartimento di Matematica e Applicazioni - University of Napoli &quot;Federico II&quot; Carmela Musella Dipartimento di Matematica e Applicazioni - University of Napoli "Federico II" Journal Article 2012 12 30 A group $G$ is called <em>metahamiltonian</em> if all its non-abelian subgroups are normal‎. ‎The aim of this paper is to provide an updated survey of research concerning certain classes of generalized metahamiltonian groups‎, ‎in various contexts‎, ‎and to prove some new results‎. ‎Some open problems are listed‎. Metahamiltonian group normalizer subgroup lattice property https://ijgt.ui.ac.ir/article_2673_d66ef73f5f08783c1a5e937dd4934f0c.pdf