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Sibirskii Matematicheskii Zhurnal, 2006, Volume 47, Number 5, Pages 1167–1192
(Mi smj923)
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Maximal tubes under the deformations of 3-dimensional hyperbolic cone-manifolds
S. Choia, J. Leeb a Department of Mathematics,
Korea Advanced Institute of Science and Technology
b Electronics and Telecommunications Research Institute
Abstract:
Hodgson and Kerckhoff found a small bound on Dehn surgered 3-manifolds from hyperbolic knots not admitting hyperbolic structures using deformations of hyperbolic cone-manifolds. They asked whether the area normalized meridian length squared of maximal tubular neighborhoods of the singular locus of the cone-manifold is decreasing and that summed with the cone-angle squared is increasing as we deform the cone-angles. We confirm this near 0 cone-angles for an infinite family of hyperbolic cone-manifolds obtained by Dehn surgeries along the Whitehead link complements. The basic method rests on explicit holonomy computations using the $A$-polynomials and finding the maximal tubes. One of the key tools is the Taylor expansion of a geometric component of the zero set of the $A$-polynomial in terms of the cone-angles. We also show that a sequence of Taylor expansions for Dehn surgered manifolds converges to 1 for the limit hyperbolic manifold.
Keywords:
hyperbolic manifold, cone-manifold, deformations.
Received: 01.02.2005
Citation:
S. Choi, J. Lee, “Maximal tubes under the deformations of 3-dimensional hyperbolic cone-manifolds”, Sibirsk. Mat. Zh., 47:5 (2006), 1167–1192; Siberian Math. J., 47:5 (2006), 955–974
Linking options:
https://www.mathnet.ru/eng/smj923 https://www.mathnet.ru/eng/smj/v47/i5/p1167
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