2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/110328Three open problems in analysis are formulated: 1. Injectivity of Radon transform 2. A uniqueness problem for an elliptic system of PDE 3. A problem in operator theoryFunctional AnalysisClassical Analysis and ODEs44A12, 35J55, 47B99text