On the Generalized Enveloping Algebra of a Color Lie Algebra

Details On the Generalized Enveloping Algebra of a Color Lie Algebra On the Generalized Enveloping Algebra of a Color Lie Algebra

2005-12-26

arxiv.org/abs/math/0512574v1

Mathematics

Rings and Algebras

11 pages, 3 figures, to appear in Algebras and Representation Theory

Scientific paper

Let $G$ be an abelien group, $\epsilon$ an anti-bicharacter of $G$ and $L$ a $G$-graded $\epsilon$ Lie algebra (color Lie algebra) over $\K$ a field of characteristic zero. We prove that all $G$-graded, positive filtered $A$ such that the associated graded algebra is isomorphic to the $G$-graded $\epsilon$-symmetric algebra $S(L)$, there is a $G$- graded $\epsilon$-Lie algebra $L$ and a $G$-graded scalar two cocycle $\omega\in\mathrm{Z}_{gr}^2(L,\K)$, such that $A$ is isomorphic to $ U_\omega(L)$ the generalized enveloping algebra of $L$ associated with $\omega$. We also prove there is an isomorphism of graded spaces between the Hochschild cohomology of the generalized universal enveloping algebra $U(L)$ and the generalized cohomology of color Lie algebra $L$.

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