Jordan superderivations. II. Fošner, Maja — 2004 International Journal of Mathematics and Mathematical Sciences
A Kleinecke-Shirokov type condition with Jordan automorphisms Matej Brešar; Ajda Fošner; Maja Fošner — 2001 Studia Mathematica Let φ be a Jordan automorphism of an algebra . The situation when an element a ∈ satisfies 1 / 2 ( φ ( a ) + φ - 1 ( a ) ) = a is considered. The result which we obtain implies the Kleinecke-Shirokov theorem and Jacobson’s lemma.