2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63776In the paper we investigate Borel classes of multivalued functions of two variables. In particular we generalize a result of Marczewski and Ryll-Nardzewski concerning of real function whose ones of its sections are right-continuous and other ones are of Borel class $α$, into the case of multivalued functions.9 pagesGeneral Topology54C60, 54C08, 28B20text