Посилання:Semi-commutativity criteria and self-coincidence elements expressed by vectors properties of n-ary groups / Yu.I. Kulazhenko// Algebra and Discrete Mathematics. — 2010. — Vol. 9, № 2. — С. 96–105. — Бібліогр.: 9 назв. — англ.
In this paper new criteria of semi-commutativity and results on self-coincidence of an arbitrary point P in the terms of properties of vectors of n-ary groups are obtained.