Thin loop algebras of Albert-Zassenhaus algebras

Details Thin loop algebras of Albert-Zassenhaus algebras Thin loop algebras of Albert-Zassenhaus algebras

2006-10-12

arxiv.org/abs/math/0610404v1

J. Algebra 315 (2007), no. 2, 824-851

Mathematics

Rings and Algebras

28 pages

Scientific paper

10.1016/j.jalgebra.2007.03.001

Thin Lie algebras are Lie algebras over a field, graded over the positive integers and satisfying a certain narrowness condition. In particular, all homogeneous components have dimension one or two, and are called diamonds in the latter case. The first diamond is the component of degree one, and the second diamond can only occur in degrees 3, 5, q or 2q-1, where q is a power of the characteristic of the underlying field. Here we consider several classes of thin Lie algebras with second diamond in degree q. In particular, we identify the Lie algebras in one of these classes with suitable loop algebras of certain Albert-Zassenhaus Lie algebras. We also apply a deformation technique to recover other thin Lie algebras previously produced as loop algebras of certain graded Hamiltonian Lie algebras.

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