Edomorphisms and Null subalgeras of finite dimensional algebras. David R. Finston (1987) Manuscripta mathematica
Existentially closed Leibniz algebras and an embedding theorem Chia Zargeh (2021) Communications in Mathematics In this paper we introduce the notion of existentially closed Leibniz algebras. Then we use HNN-extensions of Leibniz algebras in order to prove an embedding theorem.