A different perspective on H-like Lie algebras

Abstract

We characterize H-like Lie algebras in terms of subspaces of cones over conjugacy classes in $\mathfrak{so}({\mathbb{R}}^q)$, translating the classification problem for H-like Lie algebras to an equivalent problem in linear algebra. We study properties of H-like Lie algebras, present new methods for constructing them, including tensor products and central sums, and classify H-like Lie algebras whose associated $J_Z$-maps have rank two for all nonzero $Z$.