Simões, Alberto M.Carapau, FernandoCorreia, Paulo2022-02-092022-02-09202120738994http://hdl.handle.net/10400.6/12029In this work, we present suficient conditions in order to establish different types of Ulam stabilities for a class of higher order integro-differential equations. In particular, we consider a new kind of stability, the sigma-semi-Hyers-Ulam stability, which is in some sense between the Hyers-Ulam and the Hyers-Ulam-Rassias stabilities. These new suficient conditions result from the application of the Banach Fixed Point Theorem, and by applying a speci fic generalization of the Bielecki metric.engHyers-Ulam stabilityHyers-Ulam-Rassias stabilityBanach fixed point theoremjournal article10.3390/sym13112068