multiplication group; quasigroup; center
A construction is given, in a variety of groups, of a ``functorial center'' called the endocenter. The endocenter facilitates the identification of universal multiplication groups of groups in the variety, addressing the problem of determining when combinatorial multiplication groups are universal.
[Sm] Smith J.D.H.: Representation Theory of Infinite Groups and Finite Quasigroups
. Montréal, Les Presses de l'Université de Montréal, 1986. MR 0859373
| Zbl 0609.20042