Isangulova D. V.
The Liouville theorem for conformal mappings on Carnot groups with Goursat-Darboux distribution
Under minimal assumptions on smoothness we prove the Liouville theorem on conformal mappings for one infinite series of Carnot groups k with sub-Riemannian metric with Goursat-Darboux distribution, k ≥ 2: each mapping with 1-bounded distortion of a connected domain U on k is equal to the restriction to U of the action of an element of the finite-dimensional group of 1-quasiconformal smooth mappings.