2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/129362The results in the recently posted manuscript arXiv:math/0405153v3 are incorrect. The correct version of the aimed results is not original. The preprint contains material from references that are not properly quoted.2 pagesDynamical SystemsDifferential GeometryA few brief comments on the results of manuscript arXiv:math/0405153v3text