Strongly nondegenerate Lie algebras

Details Strongly nondegenerate Lie algebras Strongly nondegenerate Lie algebras

2008-02-12

arxiv.org/abs/0802.1591v1

Mathematics

Rings and Algebras

9 pgs. To appear in the Proc. of the AMS

Scientific paper

Let $A$ be a semiprime 2 and 3-torsion free non-commutative associative algebra. We show that the Lie algebra $\der(A)$ of (associative) derivations of $A$ is strongly non-degenerate, which is a strong form of semiprimeness for Lie algebras, under some additional restrictions on the center of $A$. This result follows from a description of the quadratic annihilator of a general Lie algebra inside appropriate Lie overalgebras. Similar results are obtained for an associative algebra $A$ with involution and the Lie algebra $\sder(A)$ of involution preserving derivations of $A$.

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