Montesinos Amilibia, José María2023-06-202023-06-202012978-84-695-4421-1https://hdl.handle.net/20.500.14352/45371Under the framework of Fox spreads and its completions a theory thar generalizes coverings (folding covering theory) and a theroy that generalizes branched coverings (branched folding theory) is defined and some properties are proved. Two applications to 3-manifold theory are given.A problem is stated.engbook parthttp://cisne.sim.ucm.es/record=b3232194~S6*spiopen access514515.1knotslinks3-manifoldsbranched coveringsfoldingsstringsspreadsCantor setsGeometríaTopología1204 Geometría1210 Topología