Open 3-manifolds and branched coverings: a quick exposition.
Montesinos-Amilibia, José-María (2007)
Revista Colombiana de Matemáticas
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Montesinos-Amilibia, José-María (2007)
Revista Colombiana de Matemáticas
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José María Montesinos-Amilibia (2002)
Revista Matemática Complutense
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It is proved that the Freudenthal compactification of an open, connected, oriented 3-manifold is a 3-fold branched covering of S, and in some cases, a 2-fold branched covering of S. The branching set is a locally finite disjoint union of strings.
Hilden, Mike, Montesinos, José M., Tejada, Débora, Toro, Margarita (2005)
Revista Colombiana de Matemáticas
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Ricardo Piergallini (1989)
Disertaciones Matemáticas del Seminario de Matemáticas Fundamentales
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José María Montesinos-Amilibia (2003)
Revista Matemática Complutense
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There is a disk in S whose interior is PL embedded and whose boundary has a tame Cantor set of locally wild points, such that the n-fold cyclic coverings of S branched over the boundary of the disk are all S. An uncountable set of inequivalent wild knots with these properties is exhibited.
Luigi Grasselli, Michele Mulazzani (1999)
Disertaciones Matemáticas del Seminario de Matemáticas Fundamentales
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Mark E. Feighn (1986)
Collectanea Mathematica
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Kim, Yangkok (2000)
International Journal of Mathematics and Mathematical Sciences
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José María Montesinos Amilibia (2008)
RACSAM
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This is a survey of some consequences of the fact that the fundamental group of the orbifold with singular set the Borromean link and isotropy cyclic of order 4 is a universal kleinian group.
Maria Rita Casali (1992)
Revista Matemática de la Universidad Complutense de Madrid
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In this work, we prove that every closed, orientable 3-manifold M which is a two-fold covering of S branched over a link, has type six.