2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/154803We present two comparison principles for viscosity sub- and supersolutions of Monge-Ampere-type equations associated to a family of vector fields. In particular, we obtain the uniqueness of a viscosity solution to the Dirichlet problem for the equation of prescribed horizontal Gauss curvature in a Carnot group.Analysis of PDEs49L25, 35J60, 35J70, 22E30text