Small volume link orbifolds
arXiv:1211.5057 · doi:10.4310/MRL.2013.v20.n6.a1
Abstract
This paper proves lower bounds on the volume of a hyperbolic 3-orbifold whose singular locus is a link. We identify the unique smallest volume orbifold whose singular locus is a knot or link in the 3-sphere, or more generally in a Z_6 homology sphere. We also prove more general lower bounds under mild homological hypotheses.
19 pages, 3 figures. Revised version, to appear in Mathematical Research Letters