2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65864We present some results on a fully nonlinear version of the Yamabe problem and a Harnack type inequality for general conformally invariant fully nonlinear second order elliptic equations.Analysis of PDEsDifferential Geometry35J60; 53C21; 58J05A fully nonlinear version of the Yamabe problem and a Harnack type inequalitytext