Structure of contact Lie algebras related to locally-finite derivations (Q1416714)

We know that finitely-graded contact simple Lie algebras have been studied by Kac, Osborn, Zhao and so on. In [J. Algebra 224, 23--58 (2000; Zbl 0955.17019)], the second author introduced classes of more general contact simple Lie algebras, which are in general not finitely-graded. In this paper, the authors determine the isomorphism classes of these classes of Lie algebras constructed from locally finite commuting derivations.