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By gluing together copies of an all-right angled Coxeter polytope a number of open hyperbolic 6-manifolds with Euler characteristic -1 are constructed. They are the first known examples of hyperbolic 6-manifolds having the smallest possible…

Geometric Topology · Mathematics 2007-05-23 Brent Everitt , John Ratcliffe , Steven Tschantz

D. D. Long and A. W. Reid have shown that some compact flat 3-manifold cannot be diffeomorphic to a cusp cross-section of any complete finite volume 1-cusped real hyperbolic 4-manifold. This note concerns the complex hyperbolic case. We…

Algebraic Topology · Mathematics 2007-05-23 Yoshinobu Kamishima

We exhibit some finite-volume cusped hyperbolic 5-manifolds that fiber over the circle. These include the smallest hyperbolic 5-manifold known, discovered by Ratcliffe and Tschantz. As a consequence, we build a finite type subgroup of a…

Geometric Topology · Mathematics 2021-11-30 Giovanni Italiano , Bruno Martelli , Matteo Migliorini

This paper is the second in a series whose goal is to understand the structure of low-volume complete orientable hyperbolic 3-manifolds. Using Mom technology, we prove that any one-cusped hyperbolic 3-manifold with volume <= 2.848 can be…

Geometric Topology · Mathematics 2007-05-31 David Gabai , Robert Meyerhoff , Peter Milley

We show that a partially hyperbolic system can have at most a finite number of compact center-stable submanifolds. We also give sufficient conditions for these submanifolds to exist and consider the question of whether they can intersect…

Dynamical Systems · Mathematics 2016-12-13 Andy Hammerlindl

The minimal volume of orientable hyperbolic manifolds with a given number of cusps has been found for $0,1,2,4$ cusps, while the minimal volume of 3-cusped orientable hyperbolic manifolds remains unknown. By using guts in sutured manifolds…

Geometric Topology · Mathematics 2023-04-21 Yue Zhang

We prove that for any \e>0, there exists a closed hyperbolic 4-manifold with a closed geodesic of length < \e.

Geometric Topology · Mathematics 2007-05-23 Ian Agol

We show that all closed flat n-manifolds are diffeomorphic to a cusp cross-section in a finite volume hyperbolic (n+1)-orbifold.

Geometric Topology · Mathematics 2014-10-01 D. D. Long , A. W. Reid

We exhibit some (compact and cusped) finite-volume hyperbolic four-manifolds M with perfect circle-valued Morse functions, that is circle-valued Morse functions $f\colon M \to S^1$ with only index 2 critical points. We construct in…

Geometric Topology · Mathematics 2025-09-16 Ludovico Battista , Bruno Martelli

In this paper we provide the first examples of arithmetic hyperbolic 3-manifolds that are rational homology spheres and bound geometrically either compact or cusped hyperbolic 4-manifolds.

Geometric Topology · Mathematics 2022-05-11 Leonardo Ferrari , Alexander Kolpakov , Alan W. Reid

We give new information about the geometry of closed, orientable hyperbolic 3-manifolds with 4-free fundamental group. As an application we show that such a manifold has volume greater than 3.44. This is in turn used to show that if M is a…

Geometric Topology · Mathematics 2020-11-04 Marc Culler , Peter B. Shalen

Let M be a 1-cusped hyperbolic 3-manifold whose cusp shape is quadratic. We show that there exists c=c(M) such that the number of hyperbolic Dehn fillings of M with any given volume v is uniformly bounded by c.

Geometric Topology · Mathematics 2021-01-18 BoGwang Jeon

Ian Agol and Francesco Lin proved the existence of hyperbolic four-manifolds with vanishing Seiberg-Witten invariants. We prove that the number of such manifolds of volume at most $v$ is asymptotically bounded by $v^{cv}$ considered up to…

Geometric Topology · Mathematics 2025-08-20 Kaixu Zhang

This paper builds one-cusped complex hyperbolic $2$-manifolds by an explicit geometric construction. Specifically, for each odd $d \ge 1$ there is a smooth projective surface $Z_d$ with $c_1^2(Z_d) = c_2(Z_d) = 6d$ and a smooth irreducible…

Geometric Topology · Mathematics 2025-12-05 Martin Deraux , Matthew Stover

It is known that the volume function for hyperbolic manifolds of dimension $\geq 3$ is finite-to-one. We show that the number of nonhomeomorphic hyperbolic 4-manifolds with the same volume can be made arbitrarily large. This is done by…

Geometric Topology · Mathematics 2016-09-07 Dubravko Ivanšić

In this paper we study existence and lack thereof of closed embedded orientable co-dimension one totally geodesic submanifolds of minimal volume cusped orientable hyperbolic manifolds.

Geometric Topology · Mathematics 2021-11-10 Michelle Chu , Alan W. Reid

We show that the conjectural cusped complex hyperbolic 2-orbifolds of minimal volume are the two smallest arithmetic complex hyperbolic 2-orbifolds. We then show that every arithmetic cusped complex hyperbolic 2-manifold of minimal volume…

Geometric Topology · Mathematics 2011-02-03 Matthew Stover

We show the existence of hyperbolic 4-manifolds with vanishing Seiberg-Witten invariants, addressing a conjecture of Claude LeBrun. This is achieved by showing, using results in geometric and arithmetic group theory, that certain hyperbolic…

Geometric Topology · Mathematics 2018-12-18 Ian Agol , Francesco Lin

We prove that every complete finite-volume hyperbolic 3-manifold $M$ that is tessellated into (embedded) right-angled regular polyhedra (dodecahedra or ideal octahedra) embeds geodesically in a complete finite-volume connected orientable…

Geometric Topology · Mathematics 2022-08-04 Bruno Martelli

In the present paper, we construct a cusped hyperbolic $4$-manifold with all cusp sections homeomorphic to the Hantzsche-Wendt manifold, which is a rational homology sphere. By a result of Gol\'enia and Moroianu, the Laplacian on $2$-forms…

Geometric Topology · Mathematics 2022-03-07 Leonardo Ferrari , Alexander Kolpakov , Leone Slavich