2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114142We define a general class of elliptic equations for 2-forms on 4-manifolds, of which the complex Monge-Ampere equation is a prototype. We obtain some regularity results and discuss various connections (some speculative) with modern symplectic 4-manifold theory.Differential GeometrySymplectic Geometry58J60text