TY - JOUR AU - Amores Lázaro, Ángel Miguel AU - Gutiérrez, M. PY - 1988 DO - 10.1007/BF00419592 SN - 0377-9017 UR - https://hdl.handle.net/20.500.14352/57151 T2 - Letters in Mathematical Physics AB - We study the b-completion of the three Friedmann models of the Universe, having as modelsfor 3-space the sphere, the Euclidean space or the hyperbolic space. We show that in the first casethere is just one singularity, having the full completion as... LA - eng M2 - 341 PB - Kluwer Academic KW - Physics KW - Mathematical TI - On the b-completion of certain quotient-spaces TY - journal article VL - 15 ER -