2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/116757The detailed analysis of model of the hydrodynamical vortice on a plane is executed. The derivation of the corresponding equation and its simplified variant is given, a partial solutions are constructed. The question on application of Darboux transformation is considered.11 pagesExactly Solvable and Integrable Systemstext