2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80442The nonlinear Schroedinger equation with a third-order dispersive term is considered. Infinite families of embedded solitons, parameterized by the propagation velocity, are found through a gauge transformation. By applying this transformation, an embedded soliton can acquire any velocity above a certain threshold value. It is also shown that all these families of embedded solitons are linearly stable, but nonlinearly semi-stable.To appear in Stud. Appl. MathPattern Formation and Solitonstext