Let
\mathfrakg\mathfrak{g}
be a central simple Lie algebra over a field
\mathbbF\mathbb{F}
. We study the maximal ℤ
n-graded subalgebra of
\mathfrakgÄ\mathbbF\mathbbF[x1,x1-1,¼,xn,xn-1]\mathfrak{g}\otimes_{\mathbb{F}}\mathbb{F}[x_{1},x_{1}^{-1},\ldots,x_{n},x_{n}^{-1}]
.
Keywords graded Lie subalgebras - Kac–Moody algebras
Mathematics Subject Classifications (2000) 17B70, 17B65, 17B67.