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Given a hyperbolic 3-manifold with torus boundary, we bound the change in volume under a Dehn filling where all slopes have length at least 2\pi. This result is applied to give explicit diagrammatic bounds on the volumes of many knots and…

Geometric Topology · Mathematics 2009-03-06 David Futer , Efstratia Kalfagianni , Jessica S. Purcell

We propose a method to compute complex volume of 2-bridge link complements. Our construction sheds light on a relationship between cluster variables with coefficients and canonical decompositions of link complements.

Geometric Topology · Mathematics 2014-11-19 Kazuhiro Hikami , Rei Inoue

The manuscript provides formulas for the volume of a body defined by the intersection of a solid cone and a solid sphere as a function of the sphere radius, of the distance between cone apex and sphere center, and of the cone aperture…

Classical Analysis and ODEs · Mathematics 2023-08-15 Richard J. Mathar

A finite-volume hyperbolic 3-manifold geometrically bounds if it is the geodesic boundary of a finite-volume hyperbolic 4-manifold. We construct here an example of non-compact, finite-volume hyperbolic 3-manifold that geometrically bounds.…

Geometric Topology · Mathematics 2015-05-27 Leone Slavich

For families of knots and links given in Conway notation we compute lower maximal and upper minimal bound of hyperbolic volume by using source links and augmented links.

Geometric Topology · Mathematics 2009-01-21 Slavik Jablan , Ljiljana Radovic

Let $\Delta_{L,\rho_n}(t)$ be the twisted Alexander polynomial with respect to the representation given by the composition of the lift of the holonomy representation of a certain hyperbolic link $L$ and the $n$-dimensional irreducible…

Geometric Topology · Mathematics 2019-02-08 Hiroshi Goda

We compute the Riemannian volume on the moduli space of flat connections on a nonorientable 2-manifold, for a natural class of metrics. We also show that Witten's volume formula for these moduli spaces may be derived using Haar measure, and…

Symplectic Geometry · Mathematics 2021-04-14 Lisa Jeffrey , Nan-Kuo Ho

We give estimates on the number $AL_H(x)$ of arithmetic lattices $\Gamma$ of covolume at most $x$ in a simple Lie group $H$. In particular, we obtain a first concrete estimate on the number of arithmetic 3-manifolds of volume at most $x$.…

Group Theory · Mathematics 2010-04-23 Mikhail Belolipetsky , Tsachik Gelander , Alex Lubotzky , Aner Shalev

In 3-dimensional hyperbolic geometry, the classical Schlafli formula expresses the variation of the volume of a hyperbolic polyhedron in terms of the length of its edges and of the variation of its dihedral angles. We prove a similar…

dg-ga · Mathematics 2008-02-03 Francis Bonahon

Given a differentiable deformation of geometrically finite hyperbolic $3$-manifolds $(M_t)_t$, the Bonahon-Schl\"afli formula expresses the derivative of the volume of the convex cores $(C M_t)_t$ in terms of the variation of the geometry…

Differential Geometry · Mathematics 2021-03-10 Filippo Mazzoli

We calculate the Chern-Simons invariants of the hyperbolic double twist knot orbifolds using the Schl\"{a}fli formula for the generalized Chern-Simons function on the family of cone-manifold structures of double twist knots.

Geometric Topology · Mathematics 2023-03-09 Ji-Young Ham , Joongul Lee

We show that for a large class of hyperbolic knots and links, we can determine bounds on the volume of the link complement from combinatorial information given by a link diagram. Specifically, there is a universal constant C such that if a…

Geometric Topology · Mathematics 2014-10-01 Jessica S. Purcell

This paper collects some important formulas on hyperbolic volume. To determine concrete values of volume function is a very hard question requiring the knowledge of various methods. Our goal to give a non-elementary integral on the volume…

Metric Geometry · Mathematics 2010-11-17 Á. G. Horváth

Speakman and Lee (2017) gave a formula for the volume of the convex hull of the graph of a trilinear monomial, $y=x_1x_2x_3$, over a box in the nonnegative orthant, in terms of the upper and lower bounds on the variables. This was done in…

Optimization and Control · Mathematics 2019-10-08 Emily Speakman , Gennadiy Averkov

We have derived an analytical formulation for estimating the volume of geometries enclosed by implicitly defined surfaces. The novelty of this work is due to two aspects. First we provide a general analytical formulation for all…

Numerical Analysis · Mathematics 2019-05-01 Shucheng Pan , Xiangyu Hu , Nikolaus. A. Adams

We prove that the 8^4_2 link complement is the minimal volume orientable hyperbolic manifold with 4 cusps. Its volume is twice of the volume V_8 of the ideal regular octahedron, i.e. 7.32... = 2V_8. The proof relies on Agol's argument used…

Geometric Topology · Mathematics 2013-12-04 Ken'ichi Yoshida

We compute the intrinsic volumes of the cone of positive semidefinite matrices over the real numbers, over the complex numbers, and over the quaternions, in terms of integrals related to Mehta's integral. Several applications for the…

Optimization and Control · Mathematics 2012-05-10 Dennis Amelunxen , Peter Bürgisser

This paper investigates a real-valued topological invariant of 3-manifolds called topological volume. For a given 3-manifold M it is defined as the smallest volume of the complement of a (possibly empty) hyperbolic link in M. Various…

Geometric Topology · Mathematics 2024-02-08 Marc Kegel , Arunima Ray , Jonathan Spreer , Em Thompson , Stephan Tillmann

We compare the volume of a hyperbolic 3-manifold $M$ of finite volume and the complexity of its fundamental group.

Geometric Topology · Mathematics 2013-05-30 Thomas Delzant , Leonid Potyagailo

We extend some part of the unpublished paper written by Mednykh and Rasskazov. Using the approach indicated in this paper we derive the Riley-Mednykh polynomial for some family of the $2$-bridge knot orbifolds. As a result we obtain…

Geometric Topology · Mathematics 2017-06-27 Ji-Young Ham , Joongul Lee , Alexander Mednykh , Aleksey Rasskazov