The classification of groups in which every product of four elements can be reordered
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Patrizia Longobardi, Mercede Maj, Stewart Stonehewer (1995)
Rendiconti del Seminario Matematico della Università di Padova
B.A.F. Wehrfritz (2009)
Open Mathematics
We consider the existence or otherwise of canonical divisible normal subgroups of groups in general. We present more counterexamples than positive results. These counterexamples constitute the substantive part of this paper.
C. Marchionna Tibiletti (1995)
Collectanea Mathematica
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