On central extensions of preprojective algebras

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We determine the structure of the center and the trace space of the centrally extended preprojective algebra of an ADE quiver, introduced by the first and the third authors in math/0503393. It turns out that this structure has a mysterious relationship to the structure of the maximal nilpotent subalgebra of the corresponding simple Lie algebra.
10 pages, latex

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Representation Theory, Rings and Algebras

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http://salesiana.dossiersoluciones.com/handle/123456789/113915

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0606403
 http://arxiv.org/abs/math/0606403

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arXiv