Root-graded Lie algebras with compatible grading

Lie algebras graded by a finite irreducible reduced root system R will be generalized to predivision (R, G)-graded Lie algebras for an abelian group G. In this paper such algebras are classified, up to central extensions, when R =Al for l>2, D or E, and G=Zn.

(To appear in Communications in Algebra)


Y. Yoshii <yyoshii@uottawa.ca>