$h$-Deformation as a Contraction of $q$-Deformation

摘要

We show that $h$-deformation can be obtained, by a singular limit of asimilarity transformation, from $q$-deformation; to be specefic, we obtain$\GL_h(2)$, its differential structure, its inhomogenous extension, and$\Uh{\sl(2)}$ from their $q$-deformed counterparts.