2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/75476We establish a general theorem improving regularity of solutions of elliptic pseudodifferential equations. It allows to resolve in a unified way the regularity issue for a broad class of nonlinear elliptic equations and systems appearing in different areas of geometry and analysis.Analysis of PDEsDifferential Geometry35J60; 58J05; 58J40Critical regularity for elliptic equations from Littlewood-Paley theory IItext