2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224592In this paper we introduce a new mathematical tool to solve fractional equations representing models of fractional systems : The Ultradistributions. Ultradistributions permit us to unify the notion of integral and derivative in one only operation. Several examples of application of the results obtained are given.17 pages. No figuresMathematical Physics93A30text