2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/225621A necessary condition is established for a function to be in the image of a quantum Poisson integral operator associated to the Shilov boundary of the quantum matrix ball. A quantum analogue of the Hua equations is introduced.22 pages, LaTeX2eQuantum Algebra81R50; 17B37, 31B10text