RT Book, Section T1 Branched folded coverings and 3-manifolds A1 Montesinos Amilibia, José María AB Under 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. PB UCM SN 978-84-695-4421-1 YR 2012 FD 2012 LK https://hdl.handle.net/20.500.14352/45371 UL https://hdl.handle.net/20.500.14352/45371 LA eng NO Ministerio de Ciencia e Innovación (MICINN) DS Docta Complutense RD 7 may 2024