Isoclinic extensions of Lie algebras
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.
Isoclinic extensions of Lie algebras
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.
___
- Batten, P., Moneyhun, K., Stitzinger, E.: On characterizing Lie algebras by their multipliers. Comm. Algebra 24, 4319–4330(1996).
- Batten, P., Stitzinger, E.: On covers of Lie algebras. Comm. Algebra 24, 4301–4317 (1996).
- Beyl, F.R., Tappe, J.: Group Extensions, Representations and the Schur Multiplier, Lecture Notes in Mathematics, Vol. 958, Springer-Verlag 1982.
- Bioch, J.C.: On n -isoclinic groups. Indag. Math. 38, 400–407 (1976).
- Bosko, L.: On Schur multipliers of Lie algebras and groups of maximal class. Internat. J. Algebra Comput. 20, 807–821 (2010).
- Hall, P.: The classification of prime-power groups. J. Reine Angew. Math. 182, 130–141 (1940).
- Hekster, N.S.: On the structure of n -isoclinam classes of groups. J. Pure Appl. Algebra 40, 63–85 (1986). Jones, M.R., Wiegold, J.: Isoclinism and covering groups. Bull. Aust. Math. Soc. 11, 71–76 (1974).
- Moghaddam, M.R.R., Salemkar, A.R., Nasrabadi, M.M.: Some remarks on isologic extensions of groups. Arch. Math. 82, 103–109 (2004).
- Moneyhun, K.: Isoclinisms in Lie algebras. Algebras Groups Geom. 11, 9–22 (1994).
- Salemkar, A.R., Alamian, V. and Mohammadzadeh, H.: Some properties of the Schur multiplier and covers of Lie Algebras. Comm. Algebra 36, 697–707 (2008).
- Salemkar, A.R., Bigdely, H., and Alamian, V.: Some properties on isoclinism of Lie algebras and covers. J. Algebra Appl. 7, 507–516 (2008).
- Salemkar, A.R., Edalatzadeh, B.: The multiplier and the cover of direct sums of Lie algebras. Asian-Eur. J. Math., to appear. Salemkar, A.R., Edalatzadeh, B., Mohammadzadeh, H.: On covers of perfect Lie algebras. Algebra Colloq. 18, 419–427 (2011).
- Salemkar, A.R., Mirzaei, F.: Characterizing n -isoclinism classes of Lie algebras. Comm. Algebra 38, 3392–3403 (2010).
- Weichsel, P.W.: On isoclinism. J. London Math. Soc. 38, 63–65 (1963).