RT Journal Article T1 On 3-manifolds having surface bundles as branched coverings A1 Montesinos Amilibia, José María AB We give a different proof of the result of M. Sakuma [Math. Sem. Notes Kobe Univ. 9 (1981), no. 1, 159–180] that every closed, oriented 3-manifold M has a 2-fold branched covering space N which is a surface bundle over S1. We also give a new proof of the result of Brooks that N can be made hyperbolic. We give examples of irreducible 3-manifolds which can be represented as 2m-fold cyclic branched coverings of S3 for a number of different m's as big as we like. PB American Mathematical Society SN 0002-9939 YR 1987 FD 1987-11 LK https://hdl.handle.net/20.500.14352/57719 UL https://hdl.handle.net/20.500.14352/57719 LA eng NO Comité Conjunto Hispano-Norteamericano NO NSF DS Docta Complutense RD 7 abr 2025