$q$-crossed modules and $q$-capability of Lie algebras

Given a non-negative integer $q$, we study two different notions of the $q$-capability of Lie algebras via the non-abelian $q$-exterior product of Lie algebras. The first is related to the $q$-crossed modules and inner $q$-derivations, and the second is the Lie algebra version of the $q$-capability of groups proposed by Ellis in 1995.
Comment: 16 pages