In this article we introduce the notion of the equivalence relation, isoclinism, on the central extensions of Lie algebras, and determine all central extensions occurring in an isoclinism class of a given central extension. We also show that under some conditions, the concepts of isoclinism and isomorphism between the central extensions of finite dimensional Lie algebras are identical. Finally, the connection between isoclinic extensions and the Schur multiplier of Lie algebras are discussed.
MOHAMMADZADEH, HAMID; SALEMKAR, ALI REZA; and RIYAHI, ZAHRA
"Isoclinic extensions of Lie algebras,"
Turkish Journal of Mathematics: Vol. 37:
4, Article 7.
Available at: https://journals.tubitak.gov.tr/math/vol37/iss4/7