Lie Tori—A Simple Characterization of Extended Affine Lie Algebras
Lie Tori—A Simple Characterization of Extended Affine Lie Algebras
We show the existence of a nonzero graded form on a Lie torus by the existence of a nonzero graded form on a structurable torus. This gives a simple characterization of the core of an extended affine Lie algebra (EALA). Namely, the core of any EALA is a Lie torus, …