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Every closed orientable surface S has the following property: any two connected covers of S of the same degree are homeomorphic (as spaces). In this, paper we give a complete classification of compact 3-manifolds with empty or toroidal…

Geometric Topology · Mathematics 2021-10-25 Stefan Friedl , JungHwan Park , Bram Petri , Jean Raimbault , Arunima Ray

In the present note we describe geometrically the homology classes in the total space of a surface bundle over a surface in terms of the holonomy map. We treat the cases where the base surface is closed or has one boundary component. We…

Geometric Topology · Mathematics 2016-05-12 Caterina Campagnolo

Combinatorial aspects of the Torelli-Johnson-Morita theory of surface automorphisms are extended to certain subgroups of the mapping class groups. These subgroups are defined relative to a specified homomorphism from the fundamental group…

Geometric Topology · Mathematics 2012-01-19 Yusuke Kuno , R. C. Penner , Vladimir Turaev

We compute the homotopy type of the moduli space of flat, unitary connections over aspherical surfaces, after stabilizing with respect to the rank of the underlying bundle. Over the orientable surface M^g, we show that this space has the…

Algebraic Topology · Mathematics 2018-05-09 Daniel A. Ramras

This article contains a proof of the fact that, under certain mild technical conditions, the action of the automorphism group of a cyclic 3-manifold cover of the type SxR, where S is a compact surface, yields a compact quotient. This result…

General Mathematics · Mathematics 2024-11-13 Jordan A. Sahattchieve

We show that the homeomorphism group of a surface without boundary does not admit a Hausdorff group topology strictly coarser than the compact-open topology. In combination with known automatic continuity results, this implies that the…

Geometric Topology · Mathematics 2022-11-08 J. de la Nuez González

We give a new proof of the theorem of Birman-Powell that the Torelli subgroup of the mapping class group of a closed orientable surface of genus at least 3 is generated by simple homeomorphisms known as bounding pair maps. The key…

Geometric Topology · Mathematics 2012-02-29 Allen Hatcher , Dan Margalit

The join construction produces a third Sasaki manifold from two others, and we investigate the algebraic topology of the joins of circle bundles over surfaces of positive genus with weighted three-spheres. Topologically, such a join has the…

Algebraic Topology · Mathematics 2024-04-22 Candelario Castaneda , Ross Staffeldt

In this article, we prove that the commensurability class of a closed, orientable, hyperbolic 3-manifold is determined by the surface subgroups of its fundamental group. Moreover, we prove that there can be only finitely many closed,…

Geometric Topology · Mathematics 2018-05-16 D. B. McReynolds , A. W. Reid

We present a general construction of embedded minimal and constant mean curvature surfaces in $\mathbb{S}^n$ and one-phase free boundaries joined by a smooth interpolation by capillary hypersurfaces. This framework recovers all known…

Differential Geometry · Mathematics 2026-04-07 Benjy Firester , Raphael Tsiamis

We prove that the complex surfaces parametrizing cuboids and face cuboids, as well as their minimal resolution of singularities, have trivial fundamental group. We then compute the fundamental group of certain open smooth subvarieties of…

Algebraic Geometry · Mathematics 2024-09-18 David Jarossay , Francesco Maria Saettone , Yotam Svoray

We compute the topological simple structure set of closed manifolds which occur as total spaces of flat bundles over lens spaces S^l/(Z/p) with fiber an n-dimensjional torus T^n for an odd prime p and l greater or equal to 3, provided that…

Geometric Topology · Mathematics 2023-04-14 James F. Davis , Wolfgang Lueck

We construct new examples of immersed minimal surfaces with catenoid ends and finite total curvature, of both genus zero and higher genus. In the genus zero case, we classify all such surfaces with at most $2n+1$ ends, and with symmetry…

Differential Geometry · Mathematics 2008-04-29 Wayne Rossman

If a map has k transitivity classes of vertices that are subject to the action of the automorphism group, it is said to be k-uniform. The classification of 1-uniform maps on the torus is known. In this article, we classify 2-uniform maps on…

Combinatorics · Mathematics 2023-01-26 Arnab Kundu , Dipendu Maity

We show, using standard results in length spectrum rigidity and symplectic homology, that if the unit tangent bundles of two compact surfaces of negative curvature are exact symplectomorphic, then the underlying surfaces are isometric, and…

Symplectic Geometry · Mathematics 2007-05-23 D. Burns , R. Hind

In this paper, we give a complete topological and smooth classification of non-invertible Anosov maps on torus. We show that two non-invertible Anosov maps on torus are topologically conjugate if and only if their corresponding periodic…

Dynamical Systems · Mathematics 2026-01-14 Ruihao Gu , Yi Shi

If a finite group of orientation-preserving diffeomorphisms of the 3-dimensional torus leaves invariant an oriented, closed, embedded surface of genus g>1 and preserves the orientation of the surface, then its order is bounded from above by…

Geometric Topology · Mathematics 2018-04-10 Chao Wang , Bruno Zimmermann

A complex compact surface which carries an automorphism of positive topological entropy has been proved by Cantat to be either a torus, a K3 surface, an Enriques surface or a rational surface. Automorphisms of rational surfaces are quite…

Algebraic Geometry · Mathematics 2015-09-02 Julie Déserti , Julien Grivaux

Given a finite modular tensor category, we associate with each compact surface with boundary a cochain complex in such a way that the mapping class group of the surface acts projectively on its cohomology groups. In degree zero, this action…

Quantum Algebra · Mathematics 2023-09-19 Simon Lentner , Svea Nora Mierach , Christoph Schweigert , Yorck Sommerhaeuser

We consider closed acylindrical surfaces in 3-manifolds and in knot and link complements, and show that the genus of these surfaces is bounded linearly by the number of tetrahedra in the triangulation of the manifold and by the number of…

Geometric Topology · Mathematics 2009-09-29 Mario Eudave-Munoz , Max Neumann-Coto