-groups satisfy the equation
arXiv:1812.05192 · doi:10.3390/axioms8040128
Abstract
The present note shows that -groups in [H. Heineken and F.G. Russo, Groups described by element numbers, Forum Math. 27 (2015), 1961--1977] are solvable groups (not necessarily nilpotent) for which the equation is satisfied.
4 pages