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math.GT2016
On continuous families of geometric Seifert conemanifold structures
María Teresa Lozano, José María Montesinos-Amilibia
We determine the Thurston's geometry possesed by any Seifert fibered conemanifold structure in a Seifert manifold with orbit space and no more than three exceptional fibres,…
math.GT2007
On finite index subgroups of a universal group
G. Brumfiel, H. Hilden, M. T. Lozano +5
The orbifold group of the Borromean rings with singular angle 90 degrees, , is a universal group, because every closed oriented 3--manifold occurs as a quotient space $M…