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http://dx.doi.org/10.4134/BKMS.2012.49.6.1199

ON UNIVERSAL COVERINGS OF LIE TORI  

Khalili, Valiollah (Department of Mathematics Faculty of Science Arak University)
Publication Information
Bulletin of the Korean Mathematical Society / v.49, no.6, 2012 , pp. 1199-1211 More about this Journal
Abstract
In this paper we give an introduction to the theory of universal central extensions of perfect Lie algebras. In particular, we will provide a model for the universal coverings of Lie tori and we show that automorphisms and derivations lift to the universal coverings. We also prove that the universal covering of a Lie ${\Lambda}$-torus of type ${\Delta}$ is again a Lie ${\Lambda}$-torus of type ${\Delta}$.
Keywords
root graded Lie algebras; extended affine Lie algebras and Lie tori;
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