Descent constructions for central extensions of infinite dimensional Lie algebras

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We use Galois descent to construct central extensions of twisted forms of split simple Lie algebras over rings. These types of algebras arise naturally in the construction of Extended Affine Lie Algebras. The construction also gives information about the structure of the group of automorphisms of such algebras.
13 pages, minor corrections

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Algebraic Geometry, Rings and Algebras, 17B67; 17B01; 22E65

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http://salesiana.dossiersoluciones.com/handle/123456789/142797

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0711.3799
 http://arxiv.org/abs/0711.3799
 manuscripta mathematica 122 (2007), 137-148

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arXiv