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Complex structures can only form in a universe that allows for bound states. While this is clearly observed in three-dimensions, added degrees of freedom in a higher-dimensional space preclude the immediate assumption that binding…

We show that for every $n\geq 2$ and any $\epsilon>0$ there exists a compact hyperbolic $n$-manifold with a closed geodesic of length less than $\epsilon$. When $\epsilon$ is sufficiently small these manifolds are non-arithmetic, and they…

Geometric Topology · Mathematics 2014-10-01 Mikhail Belolipetsky , Scott A. Thomson

We construct a smooth hyperbolic volume preserving diffeomorphism on a four dimensional compact Riemannian manifold which has countably many ergodic components and is arbitrarily close to the identity map.

Dynamical Systems · Mathematics 2007-05-23 Huyi Hu , Anna Talitskaya

In this paper, we prove a rigidity theorem of asymptotically hyperbolic manifolds only under the assumptions on curvature. Its proof is based on analyzing asymptotic structures of such manifolds at infinity and a volume comparison theorem.

Differential Geometry · Mathematics 2009-11-10 Yuguang Shi , Gang Tian

We consider variational problems with regular H{\"o}lderian weight or boundary singularity, and Dirichlet condition. We prove the boundedness of the volume of the solutions to these equations on analytic domains.

Analysis of PDEs · Mathematics 2023-08-02 Samy Skander Bahoura

We construct two-dimensional families of complex hyperbolic structures on disc orbibundles over the sphere with three cone points. This contrasts with the previously known examples of the same type, which are locally rigid. In particular,…

Geometric Topology · Mathematics 2025-04-15 Hugo C. Botós , Carlos H. Grossi

We give a volume formula of hyperbolic knot complements using twisted Alexander invariants.

Geometric Topology · Mathematics 2017-02-22 Hiroshi Goda

We prove that if an $n$-dimensional complete minimal submanifold $M$ in hyperbolic space has sufficiently small total scalar curvature then $M$ has only one end. We also prove that for such $M$ there exist no nontrivial $L^2$ harmonic…

Differential Geometry · Mathematics 2010-02-23 Keomkyo Seo

We construct here two new examples of non-orientable, non-compact, hyperbolic 4-manifolds. The first has minimal volume $v_m = 4{\pi}^2/3$ and two cusps. This example has the lowest number of cusps among known minimal volume hyperbolic…

Geometric Topology · Mathematics 2015-07-14 Leone Slavich

Given a closed hyperbolic 3-manifold M of volume V, and a link L in M such that the complement M \ L is hyperbolic, we establish a bound for the systole length of M \ L in terms of V. This extends a result of Adams and Reid, who showed that…

Geometric Topology · Mathematics 2014-10-01 Grant S. Lakeland , Christopher J. Leininger

We extend the concept of renormalized volume for geometrically finite hyperbolic $3$-manifolds, and show that is continuous for geometrically convergent sequences of hyperbolic structures over an acylindrical 3-manifold $M$ with…

Differential Geometry · Mathematics 2016-05-26 Franco Vargas Pallete

We show that any immersion, which is not a covering of an embedded 2-orbifold, of a totally geodesic hyperbolic turnover in a complete orientable hyperbolic 3-orbifold is contained in a hyperbolic 3-suborbifold with totally geodesic…

Geometric Topology · Mathematics 2010-07-30 Shawn Rafalski

We show that the number of isometry classes of cusped hyperbolic $3$-manifolds that bound geometrically grows at least super-exponentially with their volume, both in the arithmetic and non-arithmetic settings.

Geometric Topology · Mathematics 2021-01-05 Alexander Kolpakov , Stefano Riolo

Some conjectures about Heegaard genera and ranks of fundamental groups of 3-manifolds are formulated, and it is shown that they imply new statements about hyperbolic volume.

Geometric Topology · Mathematics 2009-04-02 Peter B Shalen

In this paper we describe a function $F_n:{\bf R}_+ \to {\bf R}_{+}$ such that for any hyperbolic n-manifold $M$ with totally geodesic boundary $\partial M \neq \emptyset$, the volume of $M$ is equal to the sum of the values of $F_n$ on the…

Metric Geometry · Mathematics 2010-02-10 Martin Bridgeman , Jeremy Kahn

W. Thurston suggested a method for computing hyperbolic volume of hyperbolic 3-manifolds, based on a triangulation of the manifold. The method was implemented by J. Weeks in the program SnapPea, which produces a decimal approximation as a…

Geometric Topology · Mathematics 2015-06-16 Anastasiia Tsvietkova

Twisted torus knots and links are given by twisting adjacent strands of a torus link. They are geometrically simple and contain many examples of the smallest volume hyperbolic knots. Many are also Lorenz links. We study the geometry of…

Geometric Topology · Mathematics 2014-05-20 Abhijit Champanerkar , David Futer , Ilya Kofman , Walter Neumann , Jessica S. Purcell

We describe a natural strategy to enumerate compact hyperbolic 3-manifolds with geodesic boundary in increasing order of complexity. We show that the same strategy can be employed to analyze simultaneously compact manifolds and…

Geometric Topology · Mathematics 2011-01-18 Alexander Mednykh , Carlo Petronio

Using $\delta$-invariants and Newton--Okounkov bodies, we derive the optimal volume upper bound for K\"ahler manifolds with positive Ricci curvature, from which we get a new characterization of the complex projective space.

Differential Geometry · Mathematics 2020-09-30 Kewei Zhang

We obtain bounds on hyperbolic volume for periodic links and Conway sums of alternating tangles. For links that are Conway sums we also bound the hyperbolic volume in terms of the coefficients of the Jones polynomial.

Geometric Topology · Mathematics 2014-05-20 David Futer , Efstratia Kalfagianni , Jessica S. Purcell