Communications in Algebra, cilt.52, sa.2, ss.566-571, 2024 (SCI-Expanded)
Let M be the free metabelian Leibniz algebra of rank two over a field K of characteristic 0. In this article, we show that an endomorphism of M which preserves the orbit of a nontrivial certain kind of element (Formula presented.) is an automorphism. Additionally, we give some test elements.