Díaz-Cano Ocaña, AntonioGonzalez Gascón, F.Peralta Salas, Daniel2023-06-202023-06-2020070362-546X10.1016/j.na.2006.08.049https://hdl.handle.net/20.500.14352/49877Submersions f such that f(-1)(0) contains a given fiber F, and that are invariant under a family of vector fields s leaving F invariant, are constructed. Examples for which a submersion of this kind cannot exist are also given. In the absence of a geometric theory of submersions f invariant under s, most of our treatment is analytic.engjournal articlehttp://www.sciencedirect.com/science/article/pii/S0362546X06005323http://www.elsevier.com/locate/narestricted access517.9SubmersionsSymmetriesEcuaciones diferenciales1202.07 Ecuaciones en Diferencias