On CR manifolds of CR dimension 1
arXiv:2603.21441
Abstract
We classify all maximal symmetry models of CR dimension 1, depending on their Bloom-Graham and Tanaka types, give coordinate realization to some of those models and prove a general extension principle.
This version is revised: more details of the proofs provided, several new references added, ancillary maple files supplemented, minor inconsistencies and typos corrected